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

The ISPS Code consists of a mandatory section-Part A, which shows（）

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.

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.

（） is not installed on the main switchboar.

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

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

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

If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）