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

The main purpose of port State control is not to（）

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

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

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

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

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

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

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