电信资源，是指（）等用于实现电信功能且有限的资源。

试题的层次参数使试题具有了（），提高了试题资源的有效价值。

试题的层次参数使试题具有了可对比性，提高了试题资源的有效价值

电信资源管制源于电信资源的稀缺性和有限性。对其管制的内容涉及资源的开发、规划、分配和（）。

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。

根据试题答案是否唯一，可将试题分为（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。