One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）

The condensers located in various stages of a flash evaporator are cooled by（）

Under MARPOL Code the ship to which it applies has to carry （）

The shipboard oil pollution emergency plan will be invalid after （）

When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish

Using a file without a handle may result in （）

Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）

Flame failure in an automatically fired auxiliary boiler can from a/an （）

During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.

By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）