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【判断题】
灰铸铁比钢的切削加工性能好。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】继电器与接触器相比,由于继电器触点的( )很小,一般不设( )装置。
【简答题】 抽样分布指的是___________________________________________________________。
【单选题】Woman: What do you think of the idea? Man: I couldn't come up with a better one. Question: What does the man mean?
A.
To him this is the best idea.
B.
It isn't too bad an idea.
C.
He has no idea about it.
D.
He couldn't think of any idea.
【简答题】用来标识类名、变量名、方法名、类型名、数组名、文件名的有效字符序列称为 ( ) 。
【单选题】It’s so hot. You can see many children _____ in the swimming pool.
A.
swimming
B.
to swim
C.
swam
D.
were swimming
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