紧急电动运行或开关动作后,应使哪些电器装置开关失效?
参考答案:
限速器、安全钳、极限、上行超速、缓冲器的电器开关。
—Could you help me find my book?
—_______. [ ]
A. Sorry, you couldn't
B. Yes, you could
C. Please ask your mother
D. Certainly
机械密封冷却水温度升高超过()℃时,能够引起给水泵跳闸。