互补对称功率放大电路，在理想情况下，其效率高达（）

乙类互补对称功率放大电路的效率在理想情况下可以达到多少？

OCL电路是（）电源互补功率放大电路；OTL电路是（）电源互补功率放大电路。

与甲类功率放大方式相比,乙类互补对称功放的主要优点是( )。

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

华北水利水电大学（花园校区）位于（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。