接触器具有动作迅速、操作安全、能频繁操作和远距离操作等优点。
参考答案:对
35.—Why didn't you remind him of the possible danger?
—But what ____ otherwise? He never listens to me.
A.could I do
B.could I have done
C.should I do
D.must I have done
信用的基本特征是( )。
A.平等的价值交换B.无条件的价值单方面让渡C.以偿还为条件的价值单方面转移D.无偿的赠与或援助