A.shockless
B.smokeless
C.no vibration
D.noiseless
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A.cooling water
B.cooling oil
C.refrigerant
D.lubricate oil
A.nuts
B.screws
C.studs
D.flanges
A.The alternators are not generating the same voltages and should be adjusted on automatic voltage regulator rheostats
B.Alternator frequencies are different and should be adjusted on the governor speed controllers
C.Alternators are out of phase and should be tripped and paralleled again
D.One alternator has lost one of its phases
A.high input impedance, high gain and low output impedance
B.high input impedance, high gain and high output impedance
C.low input impedance, low gain and high output impedance
D.low input impedance, high gain and low output impedance
A.methyl chloride
B.ammonia
C.hydrofluoric acid
D.ozone
最新試題
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
（） is not installed on the main switchboar.
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
Diesel engine air start system check valves are opened by （）
The main purpose of port State control is not to（）
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.
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）