下列物质中免疫原性最强的是（）

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.

下列四种物质氧化性最强的是( )

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

下列物质中，最强氧化剂的是（）

下列物质中，最强氧化剂的是

下列物质中，哪种是最强的氧化剂（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。