推拉电气开关时,应与开关保持一定距离。
参考答案:对
31.-----She missed her train to London,____she didn"t seem to care.
---- Well, there is anotherl one in 15 minutes.
A.or
B.as
C.thus
D.Yet
伤残按性质分为()。
A、因战
B、因公
C、因病
D、因伤