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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

精铣方法也可以代替（）加工，特别是加工那些粘接硬质塑料导轨面尤为适合。

矩形零件要求侧平面加工后相对于底面垂直，则平面是（）要素。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

数控铣加工中，进退刀位置应选在合适的位置，以保证加工质量。