单选题In a diesel engine, fuel must be broken up into a spray of fine droplets to （）.Aincrease its qualityBobtain complete burningCreduce its weightDall of the above
单选题
In a diesel engine, fuel must be broken up into a spray of fine droplets to （）.
A
increase its quality
B
obtain complete burning
C
reduce its weight
D
all of the above
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