Between the steam dram and the smaller

1、The space between cylinder liner and j

The space between cylinder liner and jacket is called （）.Athe circulating tankBthe scavenge boxCthe cooling water spaceDthe cooler

2、If clearance between a piston and the

If clearance between a piston and the cylinder wall is excessive, piston slap will occurThe slap itself is caused by （）Aalternation of side ...

3、The film of oil between the rings and

The film of oil between the rings and the liner is not only essential for the lubrication but also plays an important part in achieving （）.Aan oil sealBremoving heatCa gas sealDcooling the pisto

4、The load between two steam-driven alte

The load between two steam-driven alternators operating in parallel may be adjusted by varying （）Athe speed of the alternatorsBthe field strength of the machinesCthe power factor of the alternatorsDsteam supply to the prime mover

5、The difference between measured and de

The difference between measured and desired values is called （）.Amake-upBdesired valueCdeviationDset value

6、People between the ages of（）and 70(65

People between the ages of（）and 70(65 in Scotland)whose names appear on the electoral register,with certain exceptions,are liable for jury service and their names are chosen at random.A18B19C20D21