电子技术包括（）和电力电子技术两大分支，通常所说的模拟电子技术和数字电子技术就属于前者。

电力电子技术包括电力电子器件，变流电路和（）。

《电力需求侧管理办法》中规定，（）是指用于对电力用户用电信息进行采集、分析及对电力负荷进行控制的软硬件平台和开展电力需求侧管理的信息技术辅助系统。

某工厂电工私自将电力企业安装的电力负荷控制装置拆下，以致负荷控制装置无法运行，应承担5000元的违约使用电费。

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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

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。