转速、电流双闭环调速系统，在负载变化时出现转速偏差，消除此偏差主要靠（）。

在转速、电流双闭环调速系统中转速调节器有哪些作用?电流调节器有哪些作用?

转速、电流双闭环直流调速系统在起动过程中只有电流负反馈，没有转速负反馈。

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。

双闭环直流调速系统中，当电流反馈系数确定后，转速调节器的输出限幅（饱和）值决定了调速系统的最大电流。（）

转速、电流双闭环调速系统在开始启动时，转速调节器处于（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。