水蒸气蒸馏法可分为共水蒸馏法、通水蒸气蒸馏法及（）

石油和石油馏分的汽液平衡关系，可以通过三种实验室蒸馏方法来取得，即实沸点蒸馏，（）蒸馏和（）蒸馏.

1—溴丁烷制备实验中，粗产物用75度弯管连接冷凝管和蒸馏瓶进行蒸馏，能否改成一般蒸馏装置进行粗蒸馏？这时如何控制蒸馏终点？

可以在（）阶段采用Make-or-buy决策分析。

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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

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。