（）, 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.

光滑极限量规用来检验螺纹的什么尺寸？

光滑极限量规是：（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

光滑极限量规标有代号T的一端为通端。

光滑极限量规的通规是用来控制工件的（）。

极限量规的通端用来控制孔类工件的（）。

山西大学改为国立后，工学院存在哪些系？（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。