____ is not installed on the emergency switchboard.A.Ammeter and changeover switchB.Speed
____ is not installed on the emergency switchboard.
A.Ammeter and changeover switch
B.Speed governor device
C.Synchroscope
D.Wattmeter
____ is not installed on the emergency switchboard.
A.Ammeter and changeover switch
B.Speed governor device
C.Synchroscope
D.Wattmeter
第1题
A.When it is a D.Cmachine
B.When it is an A.Cmachine
C.Any machine that operates on over 100 volts
D.Only when working on wet steel plates
第2题
A.operated manually once an hour
B.operated until the engine has started
C.placed into operation only at maximum load
D.adjustable to meet lubrication requirements
第3题
A.propeller
B.flying wheel
C.main engine
D.crankshaft
第4题
A.mechanical energy to kinetic energy to potential energy
B.mechanical energy to potential energy to kinetic energy
C.potential energy to mechanical energy to kinetic energy
D.kinetic energy to mechanical energy to potential energy
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