单选题Fins are installed on the generating tube surfaces in waste heat boilers to （）.Aprevent soot fires in the exhaust systemBprevent exhaust gas erosion of the tubesCincrease the velocity of exhaust gas flowDincrease the rate of heat transfer
单选题
Fins are installed on the generating tube surfaces in waste heat boilers to （）.
A
prevent soot fires in the exhaust system
B
prevent exhaust gas erosion of the tubes
C
increase the velocity of exhaust gas flow
D
increase the rate of heat transfer
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