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.

直流电机电枢绕组元件的电势是（）电势；电枢绕组元件的电流是（）电流。

直流电机的补偿绕组必须与电枢绕组（）

直流电机的电枢由励磁绕组、电枢绕组、换向器、风扇等组成。

复励直流电机的励磁绕组和电枢绕组是（）。

直流电机的电枢绕组是一个闭合的绕组。

一台四极直流电机电枢绕组为单叠绕组，其并联支路数和电枢电流分别为（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

励磁绕组与电枢绕组串联，用本身负载电流励磁的电磁式电机称（）电机。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。