Which of the following problems may occur if the opening pressure of a fuel injection nozzle is greater than specified by the engine manufacturer?（）

[单选题]Which of the following problems can occur if you continually fail to drain off condensate from a starting air receiver?A．Corrosion and eventual failure of the tankB．Gumming of the tank relief valvesC．Immediate failure of components downstream of the

[单选题]Which of the following problems is the main source of fuel pump and injection system malfunctions?A．Improper lubricationB．Air in the fuel systemC．Coated fuel linesD．Excessive vibration

[单选题]Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?A．A shortage of liquid refrigerant.B．Excessive frost on the evaporator.C．Excessive condenser cooling water.D．Insufficien

[单选题]Which of the following problems should be taken when cleaning the air filter on a diesel engine equipped with a turbocharger? .A．Reduce engine speed to idle before removing the filterB．Soak the dirty filter in kerosene onlyC．Blow out the air inlet wi

[单选题]Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?（）A . Defective temperature controls in the systemB . Cavitation in the cooling water pumpC . Opened vent in the cooling s

[单选题]Which of the following may cause that an engine doesnt run on starting air?（）A . too low starting air pressureB . main start valve closedC . neither A nor BD . A and B

[单选题]Which of the following firing order may be used for a 6-cylinder engine? ( )A．1-2-3-4-5-6B．1-2-3-6-5-4C．1-5-3-6-2-4D．1-3-4-5-6-2

[单选题]Which of the following conditions may contribute to the formation of deposits on the blades of the turbocharger turbine?（）A . Poor combustionB . High cylinder oil consumptionC . Leaking exhaust valvesD . All of the above

[单选题]Which of the following may take place if the clearance of the main bearings are excessive?（）A . bearing knocksB . dropping of pressure of LOC . noisesD . all the above

[单选题]Which of the following firing order may be used for an 6 cylinder engine?（）A . 1-2-3-4-5-6B . 1-2-3-6-5-4C . 1-5-3-6-2-4D . 1-3-4-5-6-2