direct action of cam shaft
compressed air pressure
hydraulic “push rods”
direct action of the main piston moving down
第1题：
the starting air distributor
the cut-off valve on the air main
the main starting valve
the air bottle control valve
第2题：
the inlet valve is open
the exhaust valve is open
both valves are close
both valves are open
第3题：
The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by_______.
A.large conical springs
B.compressed air pressure
C.hydraulic pressure
D.exhaust gas pressure
第4题：
check the cylinder exhausts for black smoke
listen for combustion knock in that cylinder
isolate each cylinder and inspect the injector
check the cylinder exhaust temperature frequently
第5题：
most critical in a four-stroke cycle diesel engine
most critical in a two-stroke/cycle diesel engine
most critical in a four-stroke/cycle diesel engine if it is turbocharged
of equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine
第6题：
Improper fuel rack positioning
Lengthy opening of the exhaust valve
Excessively early injection timing
Extended light load operation
第7题：
the inlet valve is open
the exhaust valve is open
both valves are closed
both valves are open
第8题：
All marine low-speed diesels are of what design ________．
A.Four-stroke
B.Two-stroke
C.Electronic ignition
D.Forced exhaust
第9题：
the indicating cock
the starting valve
air inlet valve
the exhaust valve
第10题：
burned exhaust valves
excessive spring compression
spring surge
worn valve seats