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.

The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）

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

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

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

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

Which of the following items don’t belong to dock repair works?（）

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

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

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