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.

硬质合金是最适合用来制造成型刀具和各种形状复杂刀具的常用材料。

()是在钢中加入较多的钨、钼、铬、钒等合金元素，用于制造形状复杂的切削刀具。

（）是在钢中加入较多的钨、钼、铬、钒等合金元素，用于制造形状复杂的切削刀具。

合金工具钢主要用来制造具有较高切削速度及形状复杂的刀具，可以制造铣刀、铰刀。

硬质合金是最适合用来制造成型刀具和各种形状复杂刀具的常用材料。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。