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

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

Flame failure in an automatically fired auxiliary boiler can from a/an （）

Under MARPOL Code the ship to which it applies has to carry （）

（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.

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

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

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?（）

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