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【单选题】

除500kV MOV避雷器外其余避雷器应每隔()年对避雷器瓷套进行检查,检查瓷套是否完好、有无裂纹及破损,增爬裙粘着是否牢固、有无龟裂老化现象,防污涂层有无龟裂老化、起壳现象,压力释放装置紧固螺栓有无锈蚀、密封是否完整。

A.
 3
B.
 6
C.
 12
参考答案:
参考解析:
.
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举一反三

【单选题】Tighten the bolts manually if you cannot do it with the specified tool.如果不能使用指定的工具手动紧 固螺栓。

A.
Tighten the bolts manually until you can do it with the specified tool.
B.
Tighten the bolts manually if it is not feasible to doit with the specified tool.
C.
In case that you cannot do it with the specified tool in case, tighten the bolts manually.