夜间考试应当在()进行。
A.18点以后
B.19点以后
C.路灯开启的时间段内
D.各地根据实际情况确定的时间段内
参考答案:C
She worked hard ________ everything would be ready by the time he came back.
A.since
B.so that
C.as if
D.unless
电力变压器的高低压绕组在铁芯柱上按()方式套装。