直流电机换向极绕组出线端用()表示。
A.H1,H2
B.S1,S2
C.B1,B2
D.T1,T2
参考答案:A
.---This _____ John's house .It's number 101.
--- I don't think so.He said a large white house but this is a small yellow one.
A.can't be
B.must be
C.may not be
D.should be
民事责任以惩罚加害人为目的。( )