一级负荷，应由两路电源供电，一级负荷中特别重要负荷，还要有自备电源。

对于一级负荷中特别重要的负荷（）

下列为一级负荷中特别重要负荷的是（）。．

下列几种情况中，电力负荷应为一级负荷中特别重要负荷的是（）。

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。

消防负荷指消防用电设备，根据供电可靠性及中断供电所造成的损失或影响的程度，分为一级负荷、二级负荷和三级负荷。以下场所按一级负荷供电的是(    )。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。