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。

下列哪种材料属于脆性材料（）

按照建标[2003]206号文的规定，下列各项中属于直接工程费中材料费的有材料的（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

破坏时无明显变形的材料为脆性材料，下列（）材料不是脆性材料。

破坏时无明显变形的材料为脆性材料。下列哪种材料不是脆性材料？（）

破坏时无明显变形的材料为脆性材料，下列()材料不是脆性材料。