單項(xiàng)選擇題

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

你可能感興趣的試題

單項(xiàng)選擇題

Fuel oil begins injection into the cylinder of a four-stroke/cycle diesel engine during the （）.

A.intake stroke
B.exhaust stroke
C.power stroke
D.compression stroke

單項(xiàng)選擇題

Telescopic pipes to the piston of a large slow-speed main propulsion diesel engine are designed to prevent （）.

A.excessive crankcase pressure
B.excessive lube oil temperature
C.contamination of the lube oil by water
D.contamination of the cooling water by lube oil

无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

Lube oil pumps taking suction from the sump of most small marine engines are usually （）.

你可能感興趣的試題

Fuel oil begins injection into the cylinder of a four-stroke/cycle diesel engine during the （）.

Telescopic pipes to the piston of a large slow-speed main propulsion diesel engine are designed to prevent （）.