图1.5-34所示电路的时间常数τ应为()ms。
A.16
B.4
C.2
D.8
参考答案:D
_____ much advice I gave her, she did what she wanted to do.
A.However
B.Whatever
C.How
D.No matter
我国的最低工资标准实行().
A.日标准
B.周标准
C.月标准
D.年标准