Seamless mild steel is used for steam (also copper for moderate pressure and temperature), h-pair, feed discharge and all oil fuel pressure pipingsAccording to the above sentence, which of the following statements is not true?（）
1、（） is sometimes used for piston coolin
（） is sometimes used for piston cooling since leaks into the crankcase would not cause problems.ADiesel oilBHydraulic oilCLube oilDMineral oil
2、The （） engine is used for alternators
The （） engine is used for alternators and sometimes for main propulsion with a gearbox to provide a propeller of between 90 to 120 rpm.Afour-strokeBtwo-strokeCslow speedDreversible
A sail hook is used for（）.Ahoisting a windsailBparcelingCsewing canvasDtesting canva
4、（）is used for lifting cargo.
（）is used for lifting cargo.AA mooring winchBA windlassCA deck craneDA lifeboat
A bench hook is used for（）.Ahanding of cargo casesBhanding oilskingsCsewing canvasDsplicing small stuff
A sail hook is used for（）.Ahoisting a windsailBparcellingCsewing canvasDtesting canva