纯电阻是不存在的。 ()
参考答案:对
在下列油性防锈漆中,何者不能用在锌板、铝板上()
A.红丹油性防锈漆
B.铁红油性防锈漆
C.铁黑油性防锈漆
D.锌灰油性防锈漆
Do you know ________ the maths problem?
A.what should we do with
B.how should we do with
C.what we should deal with
D.how we should deal with