单选题A dry-type spark arrestor removes sparks from a diesel engine exhaust by（）Aincreasing the linear velocity of the exhaust gasesBchanging directions of exhaust gas flowCdecreasing the temperature of the exhaust gasesDaccelerating the exhaust gas through a reduced size orifice
单选题
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
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