海船船员考试
单选题The normal color of the exhaust gas of the diesel will be （）A achromatism or thin grayB thin whiteC sky-blueD black
题目
achromatism or thin gray
thin white
sky-blue
black
参考答案和解析
相似问题和答案
第1题：
A dry-type spark arrestor removes sparks from a diesel engine exhaust by ____.
A.increasing the linear velocity of the exhaust gases
B.changing directions of exhaust gas flow
C.decreasing the temperature of the exhaust gases
D.accelerating the exhaust gas through a reduced size orifice
第2题：
increase the density of the intake air
decrease turbocharger power usage
reduce exhaust gas temperature
compensate for turbocharger PRM fluctuations
第3题：
An indication of an overloaded main propulsion diesel engine is( ).
A.white smoke in the exhaust
B.high exhaust gas pyrometer readings
C.sparks in the exhaust
D.blue smoke in the exhaust
解析：pyrometer：排温表，高温计;spark:火花
译文：主推进柴油机超负荷的征兆之一是排烟温度计读数过高。
第4题：
bypass exhaust gas at high loads to prevent excessive back pressure
bypass a portion of the exhaust gas at peak loads for better efficiency
recycle exhaust gas to the turbocharger
minimize moisture condensation in the boiler gas passages at low loads
第5题：
reduce heat radiation to the engine room
aid in preventing turbocharger overheating
condense and drain moisture from exhaust gases
dampen exhaust gas pulsations in the manifold
第6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7题：
chemical analysis
back pressure readings
pyrometer readings
infrared analysis
第8题：
A water jacket is placed around the exhaust manifolds of propulsion diesel enginesto( ).
A.reduce heat radiation to the engine room
B.aid in preventing turbocharger overheating
C.condense and drain moisture from exhaust gases
D.dampen exhaust gas pulsations in the manifold
解析：water jacket：水套;exhaust manifold：排气总管;heat radiation：热辐射;condense and drain moisture from exhaust gases:将水分从排气中冷凝析出;dampen exhaust gas pulsations in the manifold：缓解排气总管中的废气脉动
译文：环绕排气总管的水套是为了减少对机舱的热辐射。
第9题：
performance
horsepower output
fuel consumption
scavenge effect
第10题：
passing the exhaust through long head pipes
diffusing exhaust vibrations through activated carbon baffles
increasing the exhaust gas velocity
reducing the exhaust gas velocity