單項(xiàng)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


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

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

5.單項(xiàng)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