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

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.

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

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

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

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

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

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

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

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（）