（）, 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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

FTP下载选择多大的文件（）

一般认为直径多大的称为"呼吸性粉尘"

一般认为直径多大的称为“呼吸性粉尘”

呼吸性粉尘是指直径多大的粉尘（）。

呼吸性粉尘是指直径多大的粉尘（）

呼吸性粉尘是指直径多大的粉尘

呼吸性粉尘是指直径多大的粉尘

呼吸性粉尘是指直径多大的粉尘

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。