【单选题】钢丝钳带电剪切导线时,不得同时剪切( )的两根线,以免发生短路事故。(1分)加油!必过!
【单选题】钢丝钳带电剪切导线时,不得同时剪切( )的两根线,以免发生短路事故。(1分)
【单选题】A consumer is in equilibrium when the consumption point is on
B.
an indifference curve.
C.
the highest indifference curve that just touches the budget line.
【单选题】In consumer equilibrium, which of the following is true?
A.
The marginal utility from the consumption of each good is the same.
B.
The marginal utility from the consumption of each good is zero.
C.
The marginal utility from the consumption of the last dollar's worth of each good is the same.
D.
The total utility from the consumption of each good is the same.
【单选题】钢丝钳带电剪切导线时,不得同时剪切( )的两根线,以免发生短路事故。(1分)
A.
在电力系统内部能量的传递或转化过程中引起的过电压称为( )。(1分)
【简答题】某用户跟维修电工反映:“家里的电器都不能工作”,维修电工到她家用验电笔检查发现,检测到火线验电笔都不亮的,请你准确判断电路的故障是( )。(5.0分)A. 漏电 B. 进户L、N线短路 C. 进户L线断路 D. 进户N线断路
【单选题】我国促进民族关系的和谐要坚持的基本原则是
【单选题】钢丝钳带电剪切导线时,不得同时剪切( )的两根线,以免发生短路事故。(1分)
A.
绝缘工具每次使用前,须认真检查有无损坏,并用清洁干燥的抹布擦拭有效绝缘部分后,再用2500V兆欧表分段测量(电极宽2cm,极间距2cm)有效绝缘部分的绝缘电阻,不得低于( )MΩ。(1分)
【单选题】钢丝钳带电剪切导线时,不得同时剪切()的两根线,以免发生短路事故。