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.

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

To proceed to the assistance of a ship in distress is（）

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

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

（） is not installed on the main switchboar.

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

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）

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

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