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

The ISPS Code consists of a mandatory section-Part A, which shows（）

Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）

Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）

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

The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）

The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）

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（）