比值比（OR）

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。

氨在空气中含量为16%---25%时成为极易爆炸的混合气体。

氨在空气中的含量为16%～25%，就会成为（）的混合气体。

沥青含量为5%的沥青混合料，油石比是（）。

当沥青混合料中的油石比是5.0%时，混合料的沥青含量是4.77％。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。