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【单选题】
'We must not expect even civilized people not to have done these things.' in the last paragraph suggests that ______.A.
those who have done any fighting and bullying cannot be considered civilized
B.
there is nothing wrong if civilized people do some fighting and bullying
C.
even civilized people have done some fighting and bullying
D.
civilized people have never done any fighting and bullying
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【单选题】三相异步电动机额定转矩与额定功率、额定转速的关系为（ ）。
A.
与额定功率和额定转速的大小都成正比
B.
与额定功率和额定转速的大小都成反比
C.
与额定功率成反比，与额定转速成正比
D.
与额定功率成正比，与额定转速成反比
【单选题】—Mum,where is Dad? —He ____ a speech for tomorrow's meeting.
A.
was preparing
B.
is preparing
C.
has prepared
D.
will prepare
【简答题】三相交流异步电动机铭牌上所标示的额定功率值是电动机的（ ）。
【单选题】—Mum, where is my backpack? —______. Is it under the bed? [ ]
A.
I don't know
B.
Excuse me
C.
It's here
【简答题】三相异步电动机的额定功率是满载时()，额定电流是满载时()，其转子的()。
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