感性负载的特点是( )。
A.电流的变化滞后于电压的变化
B.电压的变化滞后于电流的变化
C.电流的变化超前于电压的变化
D.电压的变化超前于电流的变化
参考答案:A
The teacher asked the girl again, raising his voice a bit, but still _____ no answer.
A. receiving
B. received
C. receive
D. to receive
学校教育产生的主要条件是什么?