單項(xiàng)選擇題

The expansion tank in a diesel engine closed freshwater cooling system is located at （）

A.the highest point in the system
B.the lowest point in the system
C.near the floor
D.plate level or near the tank top level

你可能感興趣的試題

單項(xiàng)選擇題

On most modern diesel engines, the main and connecting rod bearings receive their lubricating oil by （）.

A.banjo feed
B.splash feed
C.gravity feed
D.pressure feed

單項(xiàng)選擇題

The main function of tie rods in the construction of large, low speed diesel engines is to（）.

A.stiffen the bedplate in way of the main bearings to increase the engines longitudinal strength
B.accept most of the tensile loading that results from the firing forces developed during operation
C.mount the engine frame securely to the hull to prevent shaft coupling misalignment
D.connect the crosshead solidly to the piston rod