When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water ().
- Ato decrease scale formation
- Bfor better cooling effect
- Cfor more economical purpose
- Dto raise vacuum
When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water ().
1、The cooling water is in direct contact
The cooling water is in direct contact with the outer surface of the liner as a result of which it is termed a ().Awater linerBwet linerCdry linerDdrown liner
2、If the cooling water temperature and t
If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be ()Aa dirty lube oil strainerBinternal water leaksCan oil suction line restrictionDexcessive wears of the cooling water pum
3、When to remove scale from the cooling
When to remove scale from the cooling spaces, acid solution () in the system can be tested from time to time by putting some on to a piece of lime.AstrengthBdenseCpercentageDvelocity
4、The cooling water temperature () over
The cooling water temperature () over a period of 8 hours, and then shut down.Ashould be gradually increasedBshould be gradually reducedCshould be constantly keptDshould be varied up and dow
5、The cooling water of the diesel engine
The cooling water of the diesel engine should be treated, because it has()Aalkale scenceBacidityCsalinityDimpurity
6、Some sea water came into the wheel hou
Some sea water came into the wheel house during the voyage due to()the window thereof.Anot closeBnot closingCwe didn't closeDnot to be closed