用来测量建筑物或各种保温材料的热流密度及物理性能参数的常用仪表叫（）

临界温度、临界压力、临界密度这几个量统称为临界恒量，不同的气体有不同的临界恒量。

当宇宙密度（）临界密度时，宇宙的未来就变成一个开宇宙。

什么是温度场、温度梯度、热流密度、什么是温度场、温度梯度、热流密度？

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。

营养临界期 critical period of nutrition

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。