避雷器的作用?
参考答案:
限制作用于电气设备绝缘上的过电压值,以保护电气设备的绝缘。
承运人将部分运输委托给实际承运人履行的,承运人应当()。
A.对委托部分负责
B.对全部运输负责
C.对非委托部分负责
D.不对该次运输负责
根据对话内容,从对话后的选项中选出能填入空白处的最佳选项,并在答题卡上将该项涂黑。选项中有两项多余选项。(共5小题;每小题2分,共10分)
--James, can I have some black tea?
--Sure, 小题1:
--Well, just a little, please.
--Two teaspoons?
-- 小题2: I have gained some weight these days.
(Minutes later.)
--How nice it is!
-- 小题3:
--Yes, please. Do you mind me smoking here?
-- 小题4: I don't want to have secondhand smoke. Would you like some cookies, instead?
Eating more and smoking less will do you good.
-- 小题5: