A.one thousandth (10 to the -3rd power)
B.one millionth ( 10 to the -6th power)
C.one billionth ( 10 to the -9th power)
D.one trillionth (10 to the -12th power)
您可能感興趣的試卷
你可能感興趣的試題
A.without switches on it
B.with insulated switches and no exposed terminals
C.without circuit breakers
D.without safety hand nails nor rubber mats
A.larger than the greatest branch resistance
B.smaller than the lowest branch resistance
C.equal to the sum of the individual branch resistances
D.one-half the sum of the individual branch resistances
A.result in decreased acceleration time only
B.lower the starting current and increase accelerating time
C.cause a greater starting torque
D.increase the starting current and pump capacity
A.adding rubber insulation conductors to the circuit
B.using higher current and lower voltage increasing the
C.number of thermal relays in the circuit
D.using higher voltage and lower current
A.Armature and equalizer
B.Commutator and brushes
C.Rotor and interpoles
D.Field and exciter
最新試題
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the()
To shut down a diesel engine after it exceeds the set maximum speed,which type of device listed should be used?()
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()
()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 ()
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
If two A.C.generators are to be operated in parallel, the load is distributed evenly by()
The shipboard oil pollution emergency plan will be invalid after ()
Cold weather starting of a diesel engine may be made easier by()
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()