（）, 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.

儿童语言发展过程中句子的产生先于句子的理解。

动机的激励分几种（）

机车的种类分几种？

水垢分几种？水渣分几种？两者有何区别？

行车事故责任按责任程度分几种？按责任关系分几种？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

什么是焦点？焦点有几种？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。