单项选择题
A.fuel oil pressure B.a cam operated follower C.a spring-loaded pressure plate D.timing gears keyed to the crankshaft
The total starting air capacity required for reversible...
单项选择题The total starting air capacity required for reversible main engines is to be sufficient for at least （）.
A.six consecutive starts B.eight consecutive starts C.ten consecutive starts D.twelve consecutive starts
A large, low-speed, main propulsion diesel engine uses ...
单项选择题A large, low-speed, main propulsion diesel engine uses sea water to directly cool the （）.
A.cylinder heads B.exhaust valves C.scavenging air D.injectors
Lube oil pumps taking suction from the sump of most sma...
单项选择题Lube oil pumps taking suction from the sump of most small marine engines are usually （）.
A.of the diaphragm type B.of the centrifugal type C.of the positive displacement type D.independently driven by electric motors
