皮皮学,免费搜题
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【单选题】
Look. Lucy is_____ a new bike today. A. jumping B. running C. D 2. The children _____ football. A. is playing B. are playing C. play the D. play a 3. They ______TV in the evening. They do their homework. A. are watching B. can't watching C. don't watch D. don't watching 4. Listen! She____ in the classroom. A. is singing B. sing C .to sing D. is sing 5. ______are you eating? I'm eating ______ meat. A. What,some B. Which,any C. Where,not D. What,a 6. Is she ____ something? A. eat B. eating C. eatting D. eats 7. I can't catch up with the fashion,because the clothes style_______ all the time. A. has changed B. is changed C. is changing D. changed 8.Look! The children_______ basketball on the playground. A. plays B. played C. is playing D. are playing 9.Jack and Ketty_______ in the lake. Let's join them,shall we? A. swim B. have swum C. swam D. are swimming 10.It's six in the afternoon. The Greens_______ lunch together. A. has B. are having C. have had D. had had
A.
jumping
B.
riding
C.
takeing
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【简答题】请完成项目四装配图的绘制,并将源文件上传
【单选题】下列反应 AgCl(s) + I - →AgI(s) + Cl - 其可逆电池表达式为:( )
A.
AgI(s)|I - | Cl - | AgCl(s) ;
B.
AgI(s)|I - ||Cl - | AgCl(s) ;
C.
Ag(s),AgCl(s)|Cl - || I - | AgI(s),Ag(s)
D.
(D)  Ag(s),AgI(s)|I - ||Cl - | AgCl(s),Ag(s) 。
【单选题】封闭式问题的设计中,( )是将同类的若干个问题及答案排列成矩阵,以一
A.
题的形式表达出来
B.
框图式
C.
矩阵式
D.
两项选择式
E.
填空式
【判断题】运行 G70 精车工件的加工余量是粗车循环时留下的,加工轨迹为工件的轮廓线。
A.
正确
B.
错误
【单选题】封闭式问题的设计中,( )是将同类的若干个问题及答案排列成矩阵,以一个问题的形式表达出来。
A.
两项选择式
B.
框图式
C.
填空式
D.
矩阵式
【单选题】下列反应AgCl(s)+I-→AgI(s)+Cl-其可逆电池表达式为
A.
AgI(s)|I-|Cl-|AgCl(s)
B.
AgI(s)|I-||Cl-|AgCl(s)
C.
Ag(s),AgCl(s)|Cl-||I-|AgI(s),Ag(s)
D.
Ag(s),AgI(s)|I-||Cl-|AgCl(s),Ag(s)
【多选题】局域网作用于OSI参考模型的哪些层次?( )
A.
物理层
B.
数据链路层
C.
网络层
D.
传输层
【单选题】封闭式问题的设计中,( )是将同类的若干个问题及答案排列成矩阵,以一个问题的形式表达出来。
A.
两项选择式
B.
矩阵式
C.
框图式
D.
填空式
【单选题】封闭式问题的设计中,( )是将同类的若干个问题及答案排列成矩阵,以一个问题的形式表达出来。
A.
框图式
B.
两项选择式
C.
矩阵式
D.
填空式
【判断题】酸性岩浆侵入并同化基性围岩后,可进一步提高岩浆的酸性。()
A.
正确
B.
错误
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