Which of the following may cause that the compressor cuts off on high pressure cutout in a refrigeration plant? （） (1) faulty condensing (2) too few refrigerant (3) high discharge pressure
1、Which of the following may illustrate
Which of the following may illustrate the difference between "competence" and "performance" ?
2、Which of the following usually causes
Which of the following usually causes a tree to grow unhealthy?A Giving a tree a special shape and a definite height.B Removing small side br...
3、28． Which of the following may the aut
28． Which of the following may the author disagree?A Sitting up slowly without using your hands helps burn calories．B Eating apples every day...
4、Which of the following conditions may
Which of the following conditions may be attributed to a fouled turbocharger compressor inlet screen or filter?（）ADecreasing scavenge air pressureBIncreasing exhaust temperatures before the turbineCReduction in engine speedDAll of the above
5、Which of the following would cause a d
Which of the following would cause a diesel to have black smoke?（）Aleaky injectorBwater in the gasCtoo heavy oilDwater in the oil
6、Which of the following may cause that
Which of the following may cause that an engine doesnt turn on starting air?（）Atoo low starting air pressureBmain starting valve closedCneither A nor BDA and B