在试题质量质量分析中，试题区别度的意义是（）

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.

头索动物亚门包括（）纲，分隶属于（）属和（）属。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

硫杆菌属和贝日阿托氏菌属的菌种在（）发挥重要作用。

铸件的凝固方式是按（）来划分的，有（）、（）和（）三种凝固方式。纯金属和共晶成分的合金易按（）方式凝固。

如何区分杨属和柳属？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。