交流电（）mA、直流电（）mA为人体安全电流。

人体对电流的感知水平为交流10mA，直流50mA。

交流电（）mA和直流电（D）mA为人体安全电流。

全球能源互联网是全球能源发展的重大战略创新，也是重大技术创新成果。技术创新为全球能源互联网奠定了重要基础，未来需要在能源电力、材料、信息通信、互联网、物联网等多个技术领域实现创新突破，不断提高全球能源互联网的（）

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

人们生活所必需的能源可以分为维持个人生命的生理能源和（）、社会活动及生产活动中使用的生活能源两部分。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。