《继电保护和电网安全自动装置现场工作保安规定》要求,对于母线保护装置的备用间隔电流互感器二次回路应在母线保护柜(屏)端子排外侧断开,端子排内侧应短路。
参考答案:错
For more than a decade, experts from across the globe ________ on the cure of the disease that way.
A.worked
B.are working
C.have been working
D.were working
体积管计数器仅能显示整脉冲数,所以指示的脉冲计数随机不确定度为()
A、±1
B、±2
C、±3
D、±4