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.

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

Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）

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

Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）

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

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

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

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

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