DNS顶级域名中表示商业组织的是（）。

在国际顶级域名中，（）代表商业机构。

在大学课程结构体系中，根据我国高校当前的教育实践，下列课程中属于公共基础课的有（）。

Internet上的顶级域名分三类，即国家顶级域名、国际顶级域名和（）

美国哈佛大学的域名地址的顶级域名为“GOV”。

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.

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。