單項選擇題

Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?（）

A.Electric power and starting air
B.Lube oil standby pump and control air
C.Hydraulic switch and engage jacking gear
D.Motor drain and pneumatic control system power

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單項選擇題

A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal the probable（）

A.engine overload
B.leaky valves
C.stuck or broken piston rings
D.low air injection pressure

單項選擇題

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 tank
B.Gumming of the tank relief valves
C.Immediate failure of components downstream of the compressed air system
D.Boiling of the water oil mixture as pressure is reduced

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Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?（）

你可能感興趣的試題

A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal the probable（）

Which of the following problems can occur if you continually fail to drain off condensate from a starting air receiver?（）

99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精