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
A.a service tank B.a settling tank C.an expansion tank D.a double bottom tank
A.Pneumatic pipes B.Hydraulic pipes C.Telescopic pipes D.Operating gas pipes
A.control axial movement of the crankshaft B.transmit engine thrust to the propeller shaft C.absorb vibrations in the propeller shafting D.prevent propeller thrust from being transmitted to the hul
A.the viscosity index B.the fuel oil contents C.the starting speed D.the reading at the rack
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