【判断题】移动某些非固定安装的电气设备时(如电风扇,照明灯),可以不必切断电源。 ()
【简答题】The Polish take great pride in their culture.Our culture has many different customs and traditions.I will discuss three of these traditions and customs. The Polish will say “Dziekuje (thank you)” only...
【判断题】移动某些非固定安装的电气设备时 ( 如电吹风 ) ,可以不必切断电源。
【判断题】移动某些非固定安装的电气设备时(如电风扇,照明灯),必须切断电源。
【单选题】对于怀孕几个月以上的女职工,用人单位不得安排其延长工作时间和夜班劳动?
【单选题】若用缆绳系双浮,系浮前缆绳的准备下列正确的是:1前、后回头缆;2前、后单头缆;3)前、后倒缆。
【判断题】移动某些非固定安装的电气设备时(如电风扇,照明灯),可以不必切断电
【单选题】When you are finishing a meeting, you should say ______.
A.
We are getting a little sidetracked here. Please get back to the subject.
B.
Yes, I feel the same way about this.
C.
Is there any other business we want to discuss?
D.
May I finish my speech, if you don't mind...
【单选题】电感两端的电压的大小除了与电感本身的L值有关外,还与 成正比。