A.They regulate the combustion cycle B.They supply cooling water C.They synchronize the ignition spark D.They supply and regulate the lubricant flow
A.indicates the engine's particulars B.tells the engine's function C.shows the engine's type D.refers to the engine's information
A.spark plugs B.glow plugs C.heat of compression D.a magneto
A.air starters B.carburetors C.natural aspiration D.air receivers
A.furnishes support to the rudder，propeller shaft，and transom frame B.provides foundations for after mooring winches C.provides foundations for the main propulsion engines D.transfers the driving force of the propeller to the hull
