It is（）to reserve a seat on this train

1、Is it OK if I take this seat? Sorry,（

Is it OK if I take this seat? Sorry,（）Ahere you areBtake itCit's takenDnever mind

2、It is possible to mount a double sucti

It is possible to mount a double suction centrifugal pump impeller with the vanes facing in the wrong directionThis would cause the pump （）.Ahead capacity to improveBdischarge to be reversedCefficiency to decreaseDslippage to decrease

3、It is essential for（）to give a complet

It is essential for（）to give a complete description of damage and shortage in the discharging report.Athe office staffBthe terminal staffCthe ship's crewDthe insurance company

4、It is easier to replace a dry cylinder

It is easier to replace a dry cylinder liner than a wet one because（）Aof the thin wall thicknessBhoning makes it easier to maintain the des...

5、It is illegal for a public official to

It is illegal for a public official to ask people for gifts or money ______favors to them.A in preference toB in place ofC in agreement withD in exchange for

6、This train is going（）the tunnel quickl

This train is going（）the tunnel quickly.AdownBthroughCalongDi