亚洲一区二区无码人妻视频,综合久久久久久久久久久,久久人人97超碰caopeng

單項選擇題The crankshaft is of the semi built type, with the journal （） the forged or cast steel crank throws.

A.shrunk into
B.expanded into
C.extended into
D.designated into

1.單項選擇題The crankshaft is of the semi built type, with the journal （） the forged or cast steel crank throws.

A.being shrunk into
B.to be shrunk into
C.to be shrunk with
D.shrinking into

2.單項選擇題The crankshaft deflection is at first to be （） before and after repair.

A.disassembled
B.renewed
C.measured
D.regulated

3.單項選擇題The crank-room cover should not be opened until at least （） minutes after the engine stops.

A.one
B.fifteen
C.sixty
D.ninety

4.單項選擇題The crank-room cover should not be opened until at least （） minutes after the engine stops.

A.10
B.15
C.20
D.30

5.單項選擇題The crankcase cover should never be allowed to open for investigation when （）

A.the engine stops
B.the engine is running
C.you repair the engine
D.overhauling the engine