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

Diesel engine air start system check valves are opened by （）

As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）

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（）

If separating effect is not good, which measure should be taken （）

Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）

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

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.

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

（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.