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

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

（） is not installed on the main switchboar.

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

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

Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）

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

Using a file without a handle may result in （）

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.

As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）