海船船员考试
单选题Heat damage to fuel injection nozzles can be prevented by avoiding （）A excessive fuel oil temperatureB long periods of engine overloadC metallic contact between nozzles and cylinder headsD hard carbon deposit and varnish on the nozzles
题目
excessive fuel oil temperature
long periods of engine overload
metallic contact between nozzles and cylinder heads
hard carbon deposit and varnish on the nozzles
参考答案和解析
相似问题和答案
第1题：
damage to strainers
over-speeding of the engine
excessive cooling of the engine
injector damage
第2题：
(1) only is correct
(2) only is correct
both (1) and (2) are correct
neither (1) or (2) are correct
第3题：
_______can be a direct cause of faulty operation of diesel engine fuel injection nozzles.
A.Excessive fuel nozzle holder cooling
B.Sediment in the fuel supply
C.Distortion of the fuel spray pattern
D.Improper atomization of the fuel
第4题：
BHP
MCR
IHP
MEP
第5题：
employing fuel oil as a cooling medium
preventing hard carbon deposit on nozzle tips
avoiding fuel oil temperature exceeding builder’s specification
ensuring good metallic contact between nozzles and cylinder heads
第6题：
To prevent internal damage form local overheating
To ensure the fuel nozzles are flushed clean
To clear the smoke stack
To let the waste heat boiler reduce its rate of steam generation
第7题：
deliver proper fuel quantity to the injection nozzle
provide rapid fuel injection cutoff
control fuel quantity entering the pump body
control fuel pressure delivered to the combustion chamber
第8题：
The primary danger in helicopter fires is ______.
A.burning jet fuel running on to quarters or other areas
B.loss of stability
C.rotating and flying debris
D.heat damage to helicopter structure
第9题：
ship draft
pitch
engine load
oil viscosity
第10题：
Quantity of fuel injected tends to be decreased
Quantity of fuel injected will always be increased
Start of injection tends to be advanced
Duration of injection will always greater