单项选择题

直流电动机直接起动时的起动电流是额定电流的( )
A.4～7
B.1～2
C.10～20
D.20～30

A.4～7
B.1～2
C.10～20
D.20～30
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单项选择题
Mar.Black is an outspoken man, he told us without()of his disapproval of the plan.A、remainingB、preserveC、reserveD、reminding
A.Black
B.
A、remaining
B、preserve
C、reserve
D、reminding
单项选择题
（）people shouldn’t say such a terrible word.

A.Recent
B.Decent
C.Percent
D.Cent
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