海船船员考试
单选题Flame failure in an automatically fired auxiliary boiler can from a/an （）A incorrect electrode settingB incorrect nozzle positionC clogged fuel nozzleD broken high tension lead
题目
incorrect electrode setting
incorrect nozzle position
clogged fuel nozzle
broken high tension lead
参考答案和解析
相似问题和答案
第1题：
low lube oil temperature
low lube oil pressure
high exhaust temperature
high cooling water pressure
第2题：
in the event of a flame failure
in the event of a stack fire
when the water level reach the crown sheet
when the feed pump discharge pressure drops to a preset minimum
第3题：
A.salinity is abnormally
B.high steam demand is too
C.feed-water flow is low
D.water level is abnormally low
第4题：
fuel oil supply temperature is normal
burner electrode is incorrectly positioned
fuel／air ratio is incorrect
ignition current is too low
第5题：
relight the boiler immediately to prevent loss of steam pressure
relight the fire off the brickwork as the bricks are cherry red
purge the furnace of any combustible gases before attempting to relight the fire
speed up the feed pump to prevent dry firing when the burner flame is reestablished
第6题：
seawater contamination
frequent surface blows
dissolved oxygen deaeration
frequent bottom blows
第7题：
yellowish flame
golden yellow flame
white flame
brilliant white flame
第8题：
The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler ______.
A.steam demand is high
B.salinity is high
C.safety valve simmers(爆发)
D.burner flame is extinguished
第9题：
operating the boiler at less than normal water level
installing fins on the firesides of water-tubes
increasing the amount of excess air to the burners
treating the boiler water with chemical oxygen scavengers
第10题：
water in the fuel oil
broken high tension leads
incorrect electrode setting
full fuel pressure at the nozzle