The cetane rating of diesel fuel is an indication of the （）

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

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

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

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

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

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

（） is not installed on the main switchboar.

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

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.