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.

Cold weather starting of a diesel engine may be made easier by（）

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

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

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

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

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

The treatment of the fuel oils involves storage, heating, filtering and（）

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

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