测得一含源二端网络的开路电压为此10V，短路电流为0.1A，若外接一个负载电阻RL＝（）时，该RL获得最大功率。

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。

线性含源二端网络可以用一个电压源等值代替，电压源的电压等于原含源二端网络的（）电压。

任何一个含源二端网络可以用一个适当的理想电压源与一个电阻（）来代替。

线性含源二端网络可以用一个电压源等值代替，电压源的内阻等于原含源二端网络变为无源二端网络的（）电阻。

任何一个有源二端线性网络，都可以用一个等效电压源来代替，这个等效电压源的电动势等于该二端网络的（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。