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【单选题】
在本实验装置中,滴液瓶的作用是( )
A.
给系统加压
B.
连通装置
C.
给系统减压
D.
无作用
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举一反三
【单选题】Mary: I went skiing. Jill: Mary said (that) she ______ skiing.
A.
went
B.
have gone
C.
had gone
D.
has gone
【单选题】We all went to climb mountains ______Mary.
A.
except
B.
beside
C.
besides
【多选题】在发动机润滑系统中,设置的机油滤清器有:
A.
集滤器
B.
粗滤器
C.
细滤器
【单选题】在如图所示的条件下,闭合矩形线圈能产生感应电流的是( )
A.
A
B.
B
C.
C
D.
D
【单选题】下列各集合中属于空集( )
A.
某班学习成绩好的同学;
B.
绝对值不小于3的所有整数;
C.
方程x-6=0的解集
D.
方程x2+2=0的解集
【多选题】在发动润滑系统中,设置的机油滤清器有()。
A.
集滤器
B.
粗滤器
C.
细滤器
【简答题】Read and judge. Nick: Hi, Mary. Where did you go yesterday? Mary: I went to the sports park with my parents. Nick: What did you do? Mary: Dad and I went swimming. Mom and our dog, Dolly, went for a wa...
【判断题】只有严重的抑郁症者才会自杀。A. 对 B. 错
A.
正确
B.
错误
【单选题】下列各集合中属于空集( )
A.
某班学习成绩好的同学;
B.
绝对值不小于3的所有整数;
C.
方程x-6=0的解集
D.
方程 +2=0的解集
【简答题】阅读对话,判断正(√)误(×)。 Nick: Hi, Mary. Where did you go yesterday? Mary: I went to the sports park with my parents. Nick: What did you do? Mary: Dad and I went swimming. Mom and our dog, Dolly, went for a w...
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