差动式直流放大器抑制零点漂移的效果取决于（）。

直流放大器零点漂移可以采用哪些方法加以抑制？

直接耦合放大器的级数越多，放大倍数越（），零点漂移越（）；所以在多级直流放大器中，抑制（）级零飘最为重要。

差动式直流放大器抑制零点漂移效果取决于（）。

差动放大器能抑制温度引起的零点漂移。（）

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。