Engine parameters shall be corresponded to NOx Technical Files. This is required by （）

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

For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）

The condensers located in various stages of a flash evaporator are cooled by（）

Using a file without a handle may result in （）

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

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

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

（） is not installed on the main switchboar.

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.