调压室门窗应向内开启。
参考答案:错
The houses of the rich are generally larger than _______ of the poor.
A.those
B.ones
C.the one
D.that
在R、L、C串联电路中,当电流与总电压同相时,()成立。
A.ωL2C=1;
B.ω2LC=1;
C.ωLC=1;
D.ω=LC。