电力线路故障巡视主要是查明线路接地事故及跳闸原因,找出故障地点。
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Which method should be used to warm up the pump turbines prior to discharge().
A. Lock the turbine rotor and slowly bleed in steam until operating temperature is reached
B. Run the pump at high speed with the discharge valves closed
C. Run the turbine at slow speed with the pump disconnected
D. Shut the discharge valve and run the pump at slow speed
新设、大修或重做电缆盒的电缆,运行前应测量电缆泄漏电流及直流耐压试验。
A. 对
B. 错
在线路带电情况下,砍伐靠近导线的树木时,工作负责人应向工作人员说明线路有电。工作人员可以使树木和绳索接触导线。
A. 对
B. 错
上树砍剪树枝时,工作人员可以攀抓脆弱和枯死的树枝。
A. 对
B. 错