严密性试验一级管网稳压（　）分钟内压力降不大于0．05MPa；二级管网稳压30分钟内压力降不大于（　）MPa为合格。

严密性试验一级管网稳压()分钟内压力降不大于0．05MPa；二级管网稳压30分钟内压力降不大于()MPa为合格。

一级热力管网是指（）

一般来说热力一级管网是指（）。

一般来说热力一级管网是指()。

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。