单项选择题
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
单项选择题 The crankshaft is of the semi built type, with the journal （） the forged or cast steel crank throws.
单项选择题 The crankshaft deflection is at first to be （） before and after repair.
单项选择题 The crank-room cover should not be opened until at least （） minutes after the engine stops.
