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【判断题】
全压起动时启动电流大,可达额定电流的 4-7 倍,一般用于 10KW 及以下的电动机。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】What are Sarah and John planning to do as a last resort?
A.
Go to see the landlord.
B.
Go to the court.
C.
Move out.
D.
Lose part of their deposit but get the other amount.
【单选题】Jim is ____ to go _____. [ ]
A.
plans, skateboard
B.
planned, skateboarding
C.
planning, skateboarding
D.
planning, skateboard
【单选题】It is _____ to go swimming today .
A.
very warm
B.
enough warm
C.
too warm
D.
warm enough
【单选题】Why didn't the woman go swimming?
A.
Because the water was not warm enough.
B.
Because her parents' friends forbade her to swim.
C.
Because she didn't know how to swim.
D.
Because the water was too hot.
【单选题】It isn’t warm enough him his coat. [ ]
A.
to make; take off
B.
make; to take off
C.
to make; put on
D.
make; to put on
【单选题】在串级控制系统中,等效时间常数To2’减小与提高控制质量有何关系?下面哪种说法不正确?( )
A.
等效时间常数减小，系统的响应速度加快；
B.
等效时间常数减小，提高了系统工作频率；
C.
等效时间常数减小，整个系统的控制质量下降；
D.
等效时间常数减小，使系统的振荡周期得以缩短
【简答题】You won’t be warm enough in that delicate dress.
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