在220V直流系统中,当负极发生金属接地时,正极对地电压为()。
A、0V
B、110V
C、220V
D、440V
参考答案:C
—Wait until we get a satisfactory reply, will you?
—I couldn't agree_______ . The idea sounds great to me.
A.much
B.worse
C.more
D.at all
七鲜汤功效与作用