一、 选择(每题3分,共27分) 1.
i
i
+-12的三角形式为( )
(A)
)4sin 4(cos
2π
π
i + (B) )4
sin 4(cos
2π
π
i -
(C)
])4
(cos 4(sin [2π
i )π-+- (D) )]4
sin()4
[cos(2π
π
-
+-
i
2. 下列函数中在整个复平面上都解析的是( ) (A) i y xy yi x x 3
2
2
3
33--+ (B)
iy
x 331-
(C) iy x - (D) 22ixy x +
3.设c 是(1)z i t =+,12t ≤≤的线段,则
arg c
zdz ?=( )
(A )
4π (B ) 4i π (C ) (1)4
i π
+ (D )1i +
4. 设函数z e z ctg 的泰勒展开式为
n
n n
z c
∑∞
=-
)2
(π
, 那么幂级数n
n n z c ∑∞
=-
2
)(π
的收敛半径
=R ( )
(A) +∞ (B) 1 (C)
2
π
(D) π 5. 若幂级数
∑∞
=0
n n n
z c
的收敛半径为2,
那么该级数在i z 31+=处的敛散性为( ) (A )绝对收敛 (B )条件收敛 (C )发散 (D )不能确定
6。下列命题中,正确的是( )
(A )设)(),()()(0z z z z z f m ??--=在0z 处解析,m 为自然数,则0z 为)(z f 的m 级
极点。
(B )如果无穷远点∞是函数)z (f 的可去奇点,那么0]),([Re =∞z f s 。 (C )若0=z 为偶函数)(z f 的一个孤立奇点,则0]0),([Re =z f s 。 (D )若0)(=?c
dz z f ,则)(z f 在c 内无孤立奇点。
7. 利用Laplace 变换的性质可知,实积分
?
+∞
-0
d 2sin t t t
e t 的值为( )
(A )
253 (B ) 253- (C )254 (D) 25
4- 8.积分
=?
+∞
∞
---dt e t i )(0ωω( )
(A) )(20ωωπδ- (B) )(20ωωπδ+ (C) ∞+ (D)∞-
9.设)(t f 的Laplace 变换),()]([L s F t f =则=-?
])()2([L 0
2t
t
dt t f e
t ( )
(A) )]2(2)2([1-+-'-
s F s F s (B ))]2(2)2([1
+++'-s F s F s
(C ))]2(2)2([1---'s F s F s
(D ))]2(2)2([1
+-+'s F s F s
二、填空(2,8题分别为4分,6分,其余每空3分,共40分) 1. 映射z
1=
ω将z 平面上的曲线1)1(2
2=+-y x 映射 成ω平面上的曲线 .
2. 已知,)i 31(3)(3z z z f --= 则0=')(z f 的所有根为 .
3. 函数iy
x y x z f 33)(2
2-+=在1=z 处的导数为 .
4. i
i )1(+-的主值 .
5. 设ζζζ
ζζd cos )(1
||?=-=z e z f , 则=')(0f .
6. 已知,32)(2
3
xy x x x,y u +-=则由u 及其共轭调和函数构成的解析函数f (z ) = u + iv = . 7.
=?C
z ix
y-x-)d 3(2
, 其中曲线C 为从z = 0到z =1+ i 的直线段.
8. 在扩充复平面上, 函数3
sin )(z z
z z f -=
的孤立奇点有 ,奇点类型 ,奇点处留数为 。
9.在全平面解析,在实轴上等于x sin 的函数是 。
10.函数)1()1(t f t --的傅立叶变换)]1()1[(F t f t --为 。
11. 已知某函数的傅立叶逆变换为,91
)(2
ωω+=F 则该函数f (t )= 。
12.函数s
e e 2s 2s ---的Laplace 逆变换]s e e 2[
L s 2s
1----为 。 三、(8分)计算积分.d )
(cos 4||2
?=-z z πz z z
四、(8分)将函数2
3
2)(2-+-=z z z z f 在z = 1的适当圆环域(包括圆域)内展成洛朗级数.
五、(12分)用Laplace 变换解微分方程组:
??
?='=-=''-''+'='=-='-'+0
)0()0(),1(0
)0()0(),1(y y t y x y x x t u y x x δ
六、(5分) 若函数)(z f 在1|| | |11 |)(|z z f -≤ 证明 ,2,1,)!1()1 1()!1(|)0(|) (=+<++≤n n e n n f n n 柴门中学2017-2018学年下学期冀教版八年级英语期末试题 Class: Name: Marks:(满分100分) 一. 单项选择(15分) ( ) 1. —What’s the of your country, Tim? — More than thirty-five million. A. value B. name C. advantage D. population ( ) 2. —Why not consider the Internet for interesting information? — Good idea! A. search B. searches C. searched D. searching ( ) 3. It was of you to fight against the robber (抢劫者) just now. We’re all proud of you. A. brave B. foolish C. crazy D. pleasant ( ) 4. The writer in translating this book into Chinese last month. A. succeeded B. created C. divided D. appeared ( ) 5. Tina has lived in China for two years, and she knows Chinese. A. a little of B. a little C. a bit of D. both B and C ( ) 6. Mark didn’t wake up his friend called him this morning. A. before B. while C. until D. after ( ) 7. Jack the empty bottle on the floor and threw it into the dustbin. A. opened up B. picked up C. rang up D. moved up ( ) 8. Jenny I believe Tom’s words, because he always tells lies. A. Either; or B. Neither; nor C. Both; and D. Not only; but also ( ) 9. The boy’s parents since he was three years old. He has to live with his grandparents. A. died B. dead C. were dying D. have been dead ( )10. It’s difficult the poor man that new house. A. for; afford B. of; afford C. for; to afford D. of; to afford ( )11. Judy seldom goes to the history museum, she? A. is B. isn’t C. does D. doesn’t ( )12. My friend told me that she for Shanghai on June 5th. A. leave B. leaves C. will leave D. would leave ( )13. — Where is your mother, Kim? —She Hangzhou. She’ll come back this weekend. A. goes to B. has gone to C. will go to D. has been to ( )14. If you drive too fast on the road, it an accident. A. cause B. causes C. caused D. will cause ( )15. —Do you know , Li Ming? — Of course! In 2012. A. where were the 30th Olympic Games held B. when London hosted the 30th Olympic Games C. which record was broken at the Olympic Games D. how many medals did they get at the Olympic Games 机械识图习题集 第一章制图的基本知识和技能 1.图纸的幅面按尺寸大小可分为5 种,其代号分别为A0,A1,A2,A3,A4。2.图纸格式分为留有装订边和不留装订边两种,按照标题栏的方位又可将图纸格式分为X型和Y型两种。 3.标题栏应位于图纸的右下角,一般包含以下四个区:更改区、签字区、名称及代号区、其他区,标题栏中的文字方向为水平。 4.比例是指图中图形与其实物相应要素的线性尺寸之比。图样上标注的尺寸应是机件的最后完工尺寸尺寸,与所采用的比例无关。 5.常用比例有原值比例、放大比例和缩小比例三种;比例1:2是指实物是图形的2倍,属于缩小比例;比例2:1是指图形是实物的2倍,属于放大比例。 6.比例的选择原则是:作图时应尽量采用原则比例,需要时也可采用放大或缩小的比例。无论采用何种比例,图样中所注的尺寸,均为机件的最后完工尺寸。7.图样中书写的汉字、数字和字母,必须做到字体工整、笔划清除、间隔均匀、排列整齐,汉字应用长仿宋体书写,数字和字母应书写为斜体或直体。8.字号指字体的高度,图样中常用字号有3.5,5,7,10号四种。9.常用图线的种类有粗实线、细实线、波浪线、细虚线、细点画线、双点画线等六种。 10.图样中,机件的可见轮廓线用粗实线画出,不可见轮廓线用细虚线画出,尺寸线和尺寸界线用细实线画出,对称中心线和轴线用细点画线画出。虚线、细实线和细点划线的图线宽度约为粗实线的一半。 11.图样上的尺寸是零件的最后完工尺寸,尺寸以mm为单位时,不需标注代号或名称。 12.标注尺寸的四要素是尺寸界线、尺寸线、箭头、尺寸数字。 13.尺寸标注中的符号:R表示半径,φ表示直径,Sφ表示球面直径,SR表示球面半径,S表示斜度,C表示锥度。 14.标注水平尺寸时,尺寸数字的字头方向应朝上;标注垂直尺寸时,尺寸数字的字头方向应朝左。角度的尺寸数字一律按水平位置书写。当任何图线穿过尺寸数字时都必须断开。 15.斜度是指一直线(或平面)对一直线(或平面)的倾斜程度,写成1:n 形式,用符号S 表示。标注斜度时,在比数之前用斜度符号∠或>表示,该符 号的倾斜方向应与所标斜度的倾斜方向一致。 16.锥度是指圆锥的底圆直径与顶圆直径之差与圆锥长度的比,写成1:n 形式,用符号C 表示。标注锥度时,在比数之前用锥度符号或表示,该符号的倾斜方向应与所标锥度的倾斜方向一致。 17.符号“∠1:10”表示一直线(或平面)对一直线(或平面)的斜度为1:10,符号“1:5”表示圆锥的锥度为1:5 。 18.平面图形中的线段可分为已知线段、中间线段、连接线段三种。它们的作图顺序应是先画出已知线段,然后画中间线段,最后画连接线段。19.平面图形中的尺寸,按其作用可分为定形尺寸和定位尺寸两类。 人教版七年级下册英语期末试卷及答案 推荐答案 人教版七年级英语下册期末试题 一. 选择填空:从A、B、C、D中,选出一个最佳答案完成句子。(15%) 1. A ______ works in a restaurant. A. reporter B. waiter C. teacher D. doctor 2. Is there ______ fruit shop near here?Yes, there’s one near here. A. a B. the C. an D. / 3. Rick usually ______ up at 5:30 on weekdays. A. get B. gets C. got D. getting. 4. My house is ______ the post office and the bank.. A. on B. in C. between D. over 5. --___________? -- Because they are very cute. A. What is it ? B .Where are they from? C. Why do you like pandas? D. How do you like pandas? 6. Do you want to ______English with me? A. ask B. speak C. talk D. say 7. --Is there a bank over there? -- ___________. A. Yes, there’s B. No, there aren’t C. Yes, there is D .No, it isn’t 8. –How is the weather in Harbin? --It’s _________. A. snow B. snowing C. snows D. to snow 9. Look! Burton is _________ photos of the Eiffel Tower. A. having B. making C. watching D. taking 10. --_________are the children doing now? --They’re playing football on the playground. A. What B. Where C. When D. How 11. –Where is Tokyo? --I know it’s in _______. A. France B. Brazil C. Korea D. Japan 12. –Is that Mr. Smith? --Yes, he ______ a beard. A. is B. has C. takes likes 13. –It’s cold outside. You’d better _______ your gloves. A. wear B. in C. with D. put on 14. Please _______, because this is a reading room.、 A. quiet B. to be quiet C. be quiet D. to quiet 15. Just go straight and ________ left. A. go B. come C. take D. turn 二. 完形填空:从A、B、C、D中,选择一个最佳答案,使短文意思完整。(15%) I’m Li Fen. I have a pen pal. 16 name is Mary. She is from Canada. She lives in Toronto. She speaks English. She has 17 brother, but she has no sisters. Her favorite 18 is art. Two of my good friends 19 pen pals, too. Lu Yang’s pen pal is from _ 20__. His name is Tony. Tony lives in Paris. He speaks 21 . He has one brother and one 22 . His favorite subject is PE. And he can play soccer 人教版二年级下学期期末测试 数学试卷 学校________ 班级________ 姓名________ 成绩________ 一、我会填(27分) 1、由4个千、3个百和5个一组成的数是(),读 作()。 2、二百九十写作();4、8、0、0组成一个 四位数,最小的数是(),读作()。 3、7千克=()克9000克=()千 克 一只鹅重6()一个鹅蛋80() 4、与5999相邻的两个数分别是()和()。 5、看图写算式。 6 7、在○里填上“<”、“>”或“=”。 7056○9873045○3054 6kg○6g 7900g○8kg 8、5个百加3个百是()个百;5个千加3个千是 ()个千。 9、4个百加6个百是()个百,也就是()。 10、7×8加上()得64。 二、我会算。(28分) 1、直接得出结果。(10分) 12÷3= 6÷6=24÷6= 30÷5= 48÷6= 49÷7=36÷6= 35÷7= 7400-3200=4000+600= 2、混合运算。(10分) 24+12÷6 90-3×9 72÷(24 -16) (54-45)×6 8×7-34 3、用竖式计算。(8分) 29÷3= 45÷8= 73÷9= 62÷7= 三、我会选。(把正确的答案序号填在括号里。)(5分) 1、《童话故事》每本7元,小明拿30元钱最多可以买( )本。 A.3 B.4 C.5 2、二年级参加舞蹈队的同学站了5排,每排站6人,其 中男生有9人,求女生有多少人。用算式表示是( )。 A.5+6-9 B.5+6-9 C.5×6- 9 D.5+6-9 3、55÷8的余数是() A.6 B.7 C.8 D.9 4、在12+42÷6这道题里,应先算()。 A.加法B.除法 八年级英语期末试卷 22 本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两卷,满分100,考试时间100分钟。 第Ⅰ卷(选择题,共59分) 一、听力(共10小题,每小题1分,满分10分) (1)听对话回答问题,本部分共有5道小题,每道小题你将听到一段对话,每段对话听两遍。在听每段对话前,你将有5秒钟的时间阅读题目;听完后,你将有5秒钟的时间选择正确答案。在听到嘀的信号后,进入下一小题。 1.How does the woman keep fit? A. B. C. 2.What is the speed limit in this town? A. B. C. 3.When is the boy’s birthday? A.December 29. B.December 30. C.December 28. 4.How is the weather in Lushan? A.It often rains and it’s hot. B.It never rains and it’s pleasant. C.It sometimes rains but it’s pleasant. 5.What are they going to do next? A.They are going to go down the hill. B.They are going to have a picnic right now. C.They are going to climb up to the top of the hill. (2)听对话和短文回答问题你将听到一段对话和一篇短文,各听两遍。听每段对话或短文前,你将有时间阅读相关小题,每小题5秒钟;听完后,每小题你仍有5秒钟时间选择正确答案。 听一段对话,回答第6-7小题。答题完毕,请等待嘀的信号,进入第一篇短文。 6.What is the man doing? A.He’s playing computer games. B.He’s writing an e-mail. C.He’s having an online tour. 7.Whom did the woman buy the computer for? A.The man’s daughter. B.The woman’s mother. C.The woman’s daughter Tan Dun 2011—2012学年第二学期终考试 ) A)根据句意及首字母提示,写出空缺处单词。 (每小题1分,共5分) 1. Don’t climb the tall tree. It’s d . 2. His uncle has medium b______ with black hair. 3. She doesn’t mind what young people t______ of her. 4. The things in the supermarket are very e__________. 5. She w______ to the library and read a book about history. B)根据句意用所给单词的正确形式填空. (每小题1分,共10分) 1. My grandma ______ (be) in the garden ,You may find her there. 2. I think she can ______(dance) very well. 3. There are some ________ (tomato) and some beef in the noodles. 4. There ______ (be) no rice and no noodles on the table. 5. It’s 7:15 am. It’s time ______(go) to school. 6. Listen!Someone___________ (talk) in the room. 7. She practiced __________ (speak) English last Sunday. 8. Did you go__________ (shop) with her yesterday? 9. Help __________ (you) to some noodles, children. 10. I would like something __________ (eat). II单项选择。(每小题1分,共20分) ( ) 1. There is ____ old hotel next to my house. _____ hotel is very big and clean. A. a; A B. an; A C. an; The D. the; The ( ) 2. Carol ___ some reading and ____ English last weekend. 小学数学二年级下册期末试卷(二) 一、 (20分) (1) 一个一个地数,3998后面的两个数是 ( )、( )。 (2) 一个数由5个千,9个百,2个十和4个一组成,这个数是( )。 (3)一个鸡蛋约重50 ( ) 一个西瓜约重4 ( )。 (4) 在○里填上“>”“<”或“=”。 763 673 1011 1101 5千克 5000克 3999 4001 (5)在( )里填上合适的数 5× ( ) = 40 70 - ( ) = 32 ( )+ 24= 54 56 ÷ ( ) =8 (6) 光明小学共有1986名学生,大约是( )人;学校图书室藏书9980册,大约是( )。 (7) 一袋饼干有30块,每次从袋中拿出5块,( )次可以拿完。 (8) 一个星期有7天,4个星期是( )天,56天是( )个星期。 (9) 按规律填数:2 、4、 7 、11 、16 、( )、( )。 (10) 用9、8、0、0组成的四位数中,一个零都不读出来的数有( )和( )。 只读一个零的数有( )。 二、 (把正确答案的序号填在括号里)(8分) (1) 9个6是多少?列式正确的是( )。 ① 6×9 = ②6+9 = ③9 -6 = (2) 六千零九写作( )。 ① 609 ②6009 ③ 6090 (3) 下面图中,( )是钝角。 ① ② ③ 辨一辨,选一选 想一想,填一填 画一画,填一填 (4)下面的计算不能用“七八五十六”这句口诀的是( )。 ①56÷7 ②8×7③7+8 (5) 下面的现象中,( )是旋转。 ①滑滑梯②风车转动③拉抽屉 (6) 最大的四位数是( )。 ①1999 ②9000 ③9999 (7) 1千克棉花和1千克铁比较。( ) ①铁重②棉花重③一样重 (8) 一只鸭和2只鸡共重8千克,一只鸭重4千克,平均每只鸡重( )千克 ①2 ②4 ③8 三、(32分) 看清楚,算一算 (1)直接写出得数。(20分) 7×8= 54÷9= 45+5= 170-90 = 35 ÷5×3 = 18÷3 = 36+27= 42÷7= 630+200= 9×7-54 = 5×6= 86-24 = 36÷9= 160+40= 4×9÷6 = 28÷4= 52+35= 72÷8= 380-300 = 72÷9÷2 = (2)用竖式计算。 640-250 = 730-460 =320+290 = 900-580 = 四、(15分) (1)他们俩各移到哪里?画一画 初二英语期末试卷 (答题时间:90分钟) 听力测试(共 I. 听句子,根据句子的内容和所提的问题,选择符合题意的图画回答问题。每小题读两遍。(每小题1分,共5分) ()1. What sport does the man like best? ()2. Which country is Ling Ling from? ()3. What gift did the boy get from his father? ()4. Where does the woman work? ()5. What is the man talking about? II. 听对话,从每题所给的A、B、C三个选项中选出可以回答问题的最佳答案。每段对话读 两遍。 ()6. A. It’s a windy day. B. It’s a cold day. C. It’s a sunny day. ()7. A. She’s waiting for her sister. B. She’s washing her shoes. C. She’s reading newspapers. ()8. A. He had supper at home. B. He had supper in the hotel. C. He had supper in his office. ()9. A. Twelve. B. Thirteen. C. Fourteen. ()10. A. She wanted the man to have some pictures of America. B. She gave the man a book with many pictures in it. C. She had a lot of beautiful pictures to give the man. III. 听对话,从每题所给的A、B、C三个选项中选出可以回答问题的最佳答案。对话读两遍。 ()11. What are they going to see in the City of New York? A. The museums. B. The jazz concerts. C. The big apples. ()12. What does The Big Apple mean? A. A Jazz band. B. A big city. C. New York City. IV. 听短文,根据短文内容判断正误,正确的写A,错误的写B。 ()13. It’s Wednesday today. ()14. Alan Silverman is speaking. ()15. Special English is a program to teach English. V. 听短文和短文后面的问题,根据短文内容从每题所给的A、B、C三个选项中选择最佳答案。短文读两遍。 ()16. How did Mr. Black go to work every day? A. By train. B. By bus. C. On foot. ()17. Where was the poor man? A. In the man’s office. B. Near the bridge. C. At the station. ()18. What did Mr. Black always do when he passed the poor man? A. He bought some matches from him. B. He gave him some money. C. He gave a sad look at him. ()19. What time does the train always leave? A. The train always leaves at 6:05. B. The train always leaves at 5:50. C. The train always leaves at 6:10. ()What is true according to the story? A. Mr. Black was not really kind. B. The poor man was really blind. C. The poor man’s dog was blind. 第二部分笔试 一. 单项选择,选择最佳答案。(共15分,每题1分) ()21. -You’re Ben’s brother, ________? -Yes, I am. My name is Jay. A. are you B. aren’t you C. isn’t he D. is he ()22. -Where’s Mike? -He _______ the library. He’ll be back in two hours. A. has gone to B. has been in C. has gone in D. has been to ()23. -Will it rain tomorrow? 20121080138-机械识图(第三版)习题册-部分参考答案 附录习题册部分参考答案 第一章制图基本规定 三、尺寸标注 2.找出图中尺寸注法的错误之处,并在另一图中正确注出。 第二章正投影作图 一、三视图 1.正投影与三视图。 (1)投射线图形 (2)中心投影法平行投影法正投影法斜投影法 (3)形状和大小度量性好作图方便、准确 (4)反映实长真实性积聚为一点积聚性变短类似性 (5)反映实形真实性积聚为一条直线积聚性变小、投影的形状与原来的形状类似类似性 (6)正主视水平俯视侧左视 (7)投影轴长度(左、右)宽度(前、后)高度(上、下) (8)基准俯视左视 (9)长对正高平齐宽相等 (10)左右上下左右前后前后上下 2.略。 3.略。 4.用彩色笔描出线段AB、BC和平面P、Q在三视图中的投影,并填空(真实性、积聚性、类似性)。 (1)真实性积聚性积聚性;类似性类似性类似性;类似性类似性真实性;真实性积聚性真实性。 (2)类似性类似性积聚性;积聚性类似性类似性;类似性类似性类似性;类似性类似性真实性。 5.观察物体的三视图,在立体图中找出对应的物体,并填写对应的序号。 答:从左到右依次为:(2)(1);(5)(6);(4)(3)。 6.补图并填空。 (1) 前、后(2) 上、下7.根据轴测图画三视图(尺寸从轴测图中量取并取整数)。 (1)(2) 8.根据两视图补画第三视图。 (1)(2) (3)(4) 9.补画视图中的缺线。 (1)(2) (3)(4) 二、基本体 1.棱柱。 (1)(2) (3)(4) 2.棱锥。 (1)(2) 人教版初一(七年级)下册英语期末试卷 满分120分,考试时间100分钟 听力部分(20分) Ⅰ. 听对话,选择正确答案。(5分) ( )1. Q: What food are they talking about? A. B. C. ( )2. What language(语言)can Linda speak? A. Chinese. B. English. C. French. ( )3. What’s Maria’s sister’s favorite festival? A. Spring Festival. B. Mid-autumn Festival. C. Christmas. ( )4. Q: What time does Helen’s brother get up on Sunday morning? A. B. C. ( )5. Where were the two speakers? A. At the post office. B. In the shop. C. At home. Ⅱ.听句子,选择与其意思相同或相似的句子。(5分) A. What shape is your present? B. Which is your favorite season? C. At the age of twelve, I couldn’t swim. D. What’s wrong with you? E. What do you think of the weather in Beijing? 1. __________ 2. __________ 3. __________ 4. __________ 5. __________ Ⅲ.听对话,根据其内容完成下面短文。(5分) One day I want to go to the East 1 , but I don’t know the way. So I ask a policeman. The policeman tells me to go along the street, and take the 2 turning on the 3 and walk on. He says the park is in 4 of me and it is about 5 minutes’ walk. I thank him for helping me and find the place easily. 2. __________ 3. __________ 4. __________ 5. __________ Ⅳ.听短文,选择正确答案。(5分) ( ) winter it is very________. A. cool B. warm C. cold ( ) need _____ sweaters in winter. A. heavy B. light C. cool ( ) season is nice. I like _____. A. spring B. them all C. fall ( ) weather in summer _____ much. A. changes B. do not change C. does not change ( ) _____ heavy sweaters in spring. A. take off B. take on C. put on 笔试部分(100分) 二年级下册数学期末试卷 一、填空。 1、25÷7=3……4读作:。 2、△÷8=3……□,□里最大是( ) 。△÷□=6……5,□里最小是( )。 3、34米长的绳子,每5米剪一段,可以剪成这样的( )段,还剩( )米。 4、二(2)班有33个同学去划船,每条船能坐5人,要租( )条船。 5、一个数从右边起第( )位是百位,第( )位是千位。 6、4030读作,二千零五写作 7、782<□81 □里可以填( )。 8、根据每组数排列的规律接着往下写: (1)270、280、290、、。 (2)996、997、998、、。 (3)108、207、306、、。 9、填上合适的单位。 小明做家庭作业用了25( ) 一块橡皮长3( ) 文具盒长大约2( ) 房间宽4( ) 10、在○里填上>、<或=。 3厘米○3分米5毫米○4厘米10厘米○1米 1米○9分米7毫米○1分米10厘米○1分米 11、钟面上( )点整和( )点整时,时针和分针成直角。 二、判断: 1、24÷6=4读作24除6等于4。( ) 2、15÷2=6……3 ( ) 3、30个十等于3个百。( ) 4、量小蚂蚁的身长用毫米作单位。( ) 5、估算:206+292=500。( ) 6、一张长方形纸的四个角都是直角。( ) 三、计算 1.直接写得数。 480+60= 1300-400= 46+17= 81-18= 100-46= 65+27 = 93-14= 56+34= 300+3000= 1200-800= 47+39= 82-35= 7505-0= 45+36= 70-28= 27+43= 2.列竖式计算,带﹡的题要验算。 八年级英语期末测试卷 注意事项: 1.本试卷满分120分,考试时间120分钟。 2.请用钢笔或圆珠笔直接答在试卷上。 一、 单项选择(20小题,每小题1分,共20分) 从A 、 B 、 C 、 D 四个选项中选出一个最佳答案,将其标号填 入 题前括号内。 ( )1.Those terrible things happened _______ me again. A.to B.in C.on D.with ( )2. ---Have you ever been back to place where you were born,Ma Yun? --- No, It ’s shame, but I ’m too busy with my work all the time. A. a;a B.a;the C.the;a D.the;an ( )3.How ________the result is! We can ’t believe it. A.amazing B.interested C.difficult D.annoyed ( )4.________ of them is good at English,but they both do well in Chinese. A.Both B.Neither C.Each D.All ( )5.We must work harder next term. There will be ________ subjects, so we will_______ time for each subject. A.less;more B.less;less C.more;less D.more;fewer ( )6.Those boys broke Mr Read ’s window.When they saw Mr Read get -------------------------------------密-----------------------封-----------------------线--------------------------------- 班级___________ 考场__________ 姓名______________ 学号_________ 《机械识图》 一、填空题: 1.视图包括 基本视图 、 向视图 、 局部视图 、 斜视图 4种。(难度:A ) 2.物体向基本投影面投射所得的视图称为 基本视图 。(难度:A ) 3.按正投影法分别向六个基本投影面投影,可得到主视图、俯视图、左视图、右视图、仰视图、 后视图六个基本视图。(难度:A ) 4.主、俯、仰、后视图,长度相等;主、左、右、后视图,高度相等;左、俯、右、仰视图,宽 度相等。(难度:A ) 5.将物体的某一部分向基本投影面投射所得的视图称为局部视图。(难度:A ) 6.物体向不平行于任何基本投影面的平面投射所得的视图称为斜视图,必要时,允许将斜视图旋 转配置。(难度:A ) 7.画剖视图时,不要漏画剖切面后面的 可见轮廓线 。(难度:A ) 8.向视图是可以 自由配置 的视图。向视图通常用 箭头 指明投射方向。(难度:A ) 9.为了在剖视图中容易分辨出机件部的实心部分和空心部分,在剖切面剖到的实心处应画剖面符 号,而孔等空心处不画,剖面线应与机件的主要轮廓或剖面区域的对称线成45度角。(难度:A ) 10.按物体被剖切围的大小可将剖视图分为全剖视图、半剖视图和局部剖视图3种。(难度:A ) 11.将机件的部分结构用大于原图形所采用的比例画出的图形称为 局部放大 图。(难度:A ) 12.用两个相交的剖切面剖开机件绘图时,应先 旋转 后 投影 。(难度:A ) 13. 半剖视图中,半个视图与半个剖视图的分界线用 细点划线 。(难度:A ) 14. 假想用剖切面剖开机件,将处在观察者与 剖切面之间的部分移去,而将 其余部分 向投 影面投影所得到的图形称为剖视图。(难度:A ) 15.需要保留部分外形又要表达形的不对称机件,采用局部剖视图。(难度:A ) 16. 移出断面图是画在视图 之外 的断面图,移出断面图的轮廓线用 粗实 线绘制。(难 度:A ) 17. 用剖切平面局部地剖开机件所得到的剖视图称为 局部剖视图 。(难度:A ) 18.机械零件的常用表达方法有 视图 、剖视图 、 断面图 、局部放大图 及其它规定画法。(难 度:A ) 19. 局部视图是将机件的 局部形 向基本投影面投影所得的视图。(难度:A ) 20. 重合断面图是画在视图 之 的断面图,重合断面图的轮廓线用 细实线 线画出。(难度:A ) 21. 六个基本视图中,仰视图与俯视图同样反映物体长、宽方向的尺寸;右视图 与左视图同样 反映物体高、宽方向的尺寸;后视图 与主视图同样反映物体长、高方向的尺寸。(难度:A ) 22. 局部剖视图中,视图与剖视图的分界线用 波浪线 线,也可以用 双折线 线。(难度:A ) 23. 机件的部形状已经在半剖视图中表达清楚,在另一半表达外形的视图中不必再画出 细虚线 。(难度:A ) 24. 剖视图标注的三要素是 剖切符号、 剖切线、 字母。(难度:A ) 25. 剖视图只是假想地剖开机件,用以表达机件 部 形状的一种方法,实际机件是完整的, 因此除剖视图外的其它图形,都按 完整的形状画出。(难度:A ) 26. 机件上的某些细小结构在视图中表达不清晰,或不便于标注尺寸时,采用 局部放大 图。 27. 局部放大图的比例数值是放大图与实际物体的比例,而不是对 原图的比例。(难度:A ) 28. 对于机件的肋、轮辐及薄壁等,如按纵向剖切,这些结构都不画 剖面符号 ,而用 粗实线 将它与其邻接部分分开。(难度:A ) 29.根据断面图在图中配置的图中,可分为移出断面和重合断面。(难度:A ) 30.画在视图之外的断面图称为移出断面,画在视图之的断面图称为重合断面。(难度:A ) 31.螺纹按用途可分为四类,其中用来连接零件的螺纹为 连接 螺纹;用来传递动力和运 动的螺纹为 传动 螺纹。(难度:A ) 32. 以剖视图表示、外螺纹连接时,其旋合部分应按 外螺纹 的画法绘制。(难度:A ) 33. 左旋螺纹要注写 LH ,右旋螺纹不注。(难度:A ) 34.不通螺孔圆锥面尖端的锥顶角一般画成 120 度。(难度:A ) 35.螺纹相邻两牙在 中径 线上对应两点间的轴向距离称为螺距。(难度:A ) 36.啮合的圆柱齿轮的剖视图中,当剖切平面通过两啮合齿轮轴线时,在啮合区,将一个齿轮的 轮齿用粗实线绘制,另一个齿轮的轮齿被遮挡的部分用 虚线 线绘制。(难度:A ) 37. 模数 是设计、制造齿轮的重要参数。(难度:A ) 38.螺栓连接时,被连接零件的孔径必须 大于 螺栓大径。(难度:A ) 39.普通螺纹的螺距有粗牙和细牙两种, 粗牙 螺距不标注。(难度:A ) 人教版pep初一下册英语期末试卷及答案 (答题时间:80 分钟) 一、选择题 1. Would you like to share the room me A. and B. on C. with D. of 2. A room is a room where you eat meals. A. bath B. dining C. sitting D. bed 3. Please don’t talk so loud others are working. A. while B. what C. that D. like 4. September the 10 th is Day. A. Teacher B. Teachers’ C. Teacher’s D. Teachers 5. I got some presents my birthday. A. in B. at C. with D. on 6. Our friend Linda is always so polite others. A. to B. at C. for D. with 7. The bridge is built the Yellow River. A. above B. under C. over D. on 8. Their neighbours are . A. helping B. friends C. helpfully D. friendly 9. My bedroom is very beautiful and . A. quietly B. quiet C. quite D. quitely 10. It rains in summer here. A. a lot B. many C. big D. heavy 11. There is a blackboard the classroom. A. over B. in front of C. behind D. in the front of 12. She sits between . A. you and him B. he and you C. you and me D. him and you 13. Jim will arrive the eighth of May. A. at B. in C. on D. / 14. The bookshop is the ground floor. A. in B. / C. at D. on 15. Linda is standing me. A. above B. beside C. inside D. in 16. There are more than eight students in our school. A. thousands of B.thousands C.thousand D. thousand of 17. One of them often TV in the evening. A. watch B. sees C. watches D. see 18. your mother you in China A. Is with B. Does about C. Does with D. Is about 19. They live on the second floor and we live on the first floor. We live them. A. below B. over C. above D. under 20. People in the west usually in the morning. A. have shower B. have a shower C. has a shower D. have the shower 21. They are reading lesson on Page . A. twentieth Twenty B. the twentieth Twentieth C. the twentieth Twenty D. twenty Twentieth 22. “Excuse me. May I speak to Jill please”“” A. Yes I am Jill. B. Do you know him C. I’m speaking. D. This is Jill speaking. 23. We’ll arrive Beijing the afternoon of May 3. A. at in B. in on C. in in D. at at 24. “ is your phone number”“It’s 58886531.” A. How much B. How C. What D. How many 25. Where my clothes A. are B. am C. is D. be 26. “We’ll go on a trip tomorrow.”“That sounds .” A. well B. badly C. bad D. good 27. They are from Australia. They English. A. say B. tell C. talk D. speak 28. He stayed there for three months. A. at lest B. fewer than C. at least D. more than 1 / 42018年八年级英语下册期末试卷(含答案)
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