【判断题】The isolating switch itself has no arc extinguishing device and cannot switch off the high current.
【单选题】关于“ Isolating switch fuse ”的合理解释是()
【判断题】When switching off,the isolating switch opens to disconnect the circuit first.
【单选题】The isolating switch can ensure the safety of high voltage maintenance and repair, which of the following circuits needn’t an isolating switch: ______.
A.
circuit between high voltage bus bars and generator breaker
B.
circuit between high voltage bus bars and power distributing breaker
C.
circuit between high voltage bus bars and transformer breaker
D.
circuit between low voltage bus bars and power distributing breaker
【判断题】糖分解代谢三条途径的主要生理功能都是为机体提供能量。
【判断题】从热力学角度,在一定温度下存在一定浓度空位的晶体才是稳定的。