通过整流元件把交流电变成直流电的电路称为（）。

整流电路就是利用整流二极管的单向导电性将交流电变成直流电的电路。

把直流电逆变成和电网（）的交流电反送到电网去，称为有源逆变；

  利用二极管的()可以交流电将变成直流电。

将直流电压变成交流电压的是（）。

把直流电逆变成同频率的交流电反送到电网去，称为（）。

将逆变电路的交流电侧接到交流电网上，把直流电逆变成与电网同频率的交流电反送回电网去，称为（）。

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.

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。