As a heat engine,（） energy is the sour

1、Data transfer is slow between the sour

Data transfer is slow between the source and destination. The quality of service requested by the transport layer in the OSI reference model i...

2、The energy consumed by an AC motor, as

The energy consumed by an AC motor, as strictly reactive power, is （）Aused to do mechanical workBused to establish the magnetic field of the motorClost as heat generated by the windingsDlost in doing work to turn the motor itself

3、The marine diesel engine is a type of

The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.AprincipleBprincipalCcauseDcase

4、In a diesel engine, offers the heat en

In a diesel engine, offers the heat energy directly（）； works as working medium and changes the heat energy to mechanical energy（）Athe burni...

5、In a diesel engine, when the fuel is i

In a diesel engine, when the fuel is injected into the cylinder,（）Athe piston is just coming upward from the bottom dead centerBthe piston h...

6、In a common rail engine, the fuel is i

In a common rail engine, the fuel is injected into cylinders（）Aby injection pumpsBat a time decided by the injection pump timingCby a signal opening the magnetic valvesDat a time decided by the cam directly