19.The three basic elements necessary for any fire are .(A)heat, gas and flame (B)fuel, heat and oxy
20. is sometimes used for piston cooling since its leakage into the crankcase would not causeadditio
21.For a turbocharged diesel engine, the lack of combustion air may be caused to the .(A)fouling tur
30.柴油機船輪機日誌的『掃氣溫度』其英文為：(A)exhaust gas pressure (B)exhaust gas temperature (C)scavenging air temperat
31.“Stand by engine” means to .(A)prepare to stop the engine (B)assemble an engine on its bedplate (
32.For an ordinary four-stroke diesel engine, the intake valve is opened .(A)after TDC (Top dead cen
33.For the two-stroke engine, each revolution of makes one power stroke.(A)the turning gear (B)the t