海船船员考试
单选题If the engine does start on air, but combustion does not immediately begin, the cause may be （）.A failure of the fuel pumpsB starting air pressure too lowC stop valve in air line closedD the turning gear still engaged
题目
failure of the fuel pumps
starting air pressure too low
stop valve in air line closed
the turning gear still engaged
相似问题和答案
第1题：
If the engine does start on air, but combustion does not immediately begin, the cause may be _____.
A.failure of the fuel pumps
B.starting air pressure too low
C.stop valve in air line closed
D.the turning gear still engaged
第2题：
a shortened ignition delay period
a lean fuel/air mixture
excess fuel in the combustion chamber
rapid vaporization of injected fuel droplets
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：
the burning
the fuel
the air charge
the engine piston
第5题：
machine efficiency
machinery efficiency
mechanical efficiency
mechanics efficiency
第6题：
How does combustion air enter the cylinder of a two-cycle diesel engine ? Through _______．
A.Cylinder head valves
B.Ports
C.Turbo chargers
D.Bleeder valves
第7题：
high compression pressure
low intake air temperature
low exhaust pressure
high scavenge air temperature
第8题：
what does “finished with engine” mean?
第9题：
quantity of air it takes in and retains in the cylinders during a given time period
proportion of trapped air that is utilized in the combustion process
thermodynamic efficiency of the engine cycle
all of the above
第10题：
begin
support
last
extinguish