典型间壁式换热器有（）换热器和（）换热器等

按照换热方式的特点，换热器可分为三类：间壁式换热器、蓄热式换热器和混合式换热器。

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.

在列管式换热器中，当热流体为饱和蒸汽时，流体的逆流平均温差和并流平均温差相等。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

（）换热器属于间壁式换热器。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

顺流布置管壳式换热器中，如果冷热流体流量和比热均相同，当热流体的进出温度分别为70ºC和50ºC，冷流体温进出度分别为10ºC和30ºC时，其对数平均温度差为（）