單項選擇題

Excessive clearances in the main or crank-pin bearings will sometimes be indicated by （） before any bearing knock is heard.

A.loss of flow in the fuel system
B.loss of pressure in the air system
C.loss of flow in the lubricating system
D.loss of pressure in the lubricating system

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單項選擇題

Engine fuel pump index is （）.

A.the viscosity index
B.the fuel oil contents
C.the starting speed
D.the reading at the rack

單項選擇題

Engine （） refers to the relative time of position of crank, at which each operation during the cycle is commenced and is completed.

A.timing
B.power
C.firing order
D.dead center

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Excessive clearances in the main or crank-pin bearings will sometimes be indicated by （） before any bearing knock is heard.

你可能感興趣的試題

Engine fuel pump index is （）.

Engine （） refers to the relative time of position of crank, at which each operation during the cycle is commenced and is completed.