cam rollers on the camshaft
spring force
air pressure on top of the valve differential piston
air pressure on the bottom of the valve differential piston
第1题：
In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?
A.Noise coming from that air starting valve
B.Continuous operation of the starting air compressor
C.Zero air pressure in the air starting system
D.Overheated starting air pipe to the cylinder head
第2题：
the starting air distributor
the cut-off valve on the air main
the main starting valve
the air bottle control valve
第3题：
If the engine does not start on air, it may be due to
A.low compression of the fuel pumps
B.incorrect timing of fuel pumps
C.the starting air valves stuck
D.air-locks in fuel oil pipeline
第4题：
Holding the valve open for a long period
Increasing the starting air pressure used
Opening the stating air valve quickly
Reducing the starting air valve size
第5题：
to increase
to speed up
to prevent
to reduce
第6题：
one automatic drain serving both containers
two air starting containers of approximately equal size
one control air container and one starting air container
one additional means of starting the main engine
第7题：
too low starting air pressure
main starting valve closed
neither A nor B
A and B
第8题：
Vessels having main engines arranged for air starting are to be provided with at least__.
A.one automatic drain serving both containers
B.two air starting containers of approximately equal size
C.one control air container and one starting air container
D.one additional means of starting the main engine
第9题：
starting air pressure too high
correct timing of starting air valves
three of the six starting valves stuck
the turning gear disengaged
第10题：
too low starting air pressure
main start valve closed
neither A nor B
A and B