The pressure range between the system cut in and cut out pressures in a refrigeration unit is known as()
A、opposing operational drag
B、pressure distribution
C、differential
D、system purge
The pressure range between the system cut in and cut out pressures in a refrigeration unit is known as()
A、opposing operational drag
B、pressure distribution
C、differential
D、system purge
Which of the following beneficial results can be expected from supercharging a previously naturally aspirated engine?()
A、Increased turbulence
B、increased mechanical efficiency
C、Increased brake mean effective pressure
D、All of the above
A leaking diesel engine fuel injector will cause()
A、prolonged maintenance intervals
B、improved atomization
C、greater fuel economy
D、incomplete combustion
(), the motion would continue indefinitely once it had started.
A、Were there loss of energy by friction
B、Since there be loss of energy by friction
C、Were there no loss of energy by friction
D、Should be no loss of energy by friction
The accident resulted () the motorman’s carelessness.
A、in
B、to
C、from
D、by
The Company should ensure that the master is fully () with the Companys SMS.
A、familiar
B、understand
C、conversation
D、confused