海船船员考试
单选题With VIT the start of injection may be （） as the engine load is reduced within a certain range.A advancedB retardedC relayedD cut off
题目
advanced
retarded
relayed
cut off
参考答案和解析
相似问题和答案
第1题：
If a gasoline engine turns over freely but will not start，the cause is generally ______．
A.A defective ignition system
B.Low lube oil level
C.Weak valve springs
D.Too heavy a load
第2题：
insufficient fuel supply
faulty governor
high exhaust back pressure
all of the above may cause this problem
第3题：
If the diesel engine fuel injection timing is changed to delay the start of injection until the pistons are at top dead center, the engine will_________.
A.backfire through the air intakes
B.develop less power under load
C.have high firing pressures
D.lift its cylinder relief valves
第4题：
excessively late injection timing for each cylinder
incorrectly adjusted intake valve timing
incorrectly adjusted fuel injector
incorrectly adjusted intake valve clearance
第5题：
to work as overload characteristic
overspeed
over mechanical load only
over thermal load only
第6题：
ship draft
pitch
engine load
oil viscosity
第7题：
carbon buildup in the exhaust manifold
overcooling of the exhaust manifold
eroded muffler baffle plates
high injection pressure
第8题：
If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the
A.cylinder compression pressure may not be high enough
B.cylinder compression temperature may be too high
C.fuel oil injection pressure may not be high enough
D.scavenge and purge process is incomplete
第9题：
low air charge temperature
high cranking speed
excessive fuel dilution of lube oil
high compression pressure
第10题：
turn engine with jacking gear
drain filters and strainers and bleed off water at each injection pump
use ether to start the engine with blow-down valves open
blow through the cylinders and fuel lines with a drying agent