A hygroscopic cargo is define as a cargo().
A. capable of absorbing moisture in the form of a gas
B. capable of giving off moisture in the form of a liquid
C. that is shipped in a liquid stste
D. that will ignite in contact with water
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停电线路的验电应逐相进行。联络用的开关或刀闸检修时,应在()
A. 受电侧验电
B. 送电侧验电
C. 两侧验电
D. 开关或刀闸本体上验电
挖掘机施工过程,对于上方不同电压的电线,应保持的安全距离分别是多少?
娱乐经营许可证有效期届满未延续的,原发证机关可以直接注销娱乐经营许可证。
A. 正确
B. 错误