单选题Diesel engine crankshaft deflection readings are generally taken at four crank positionsGood engineering practice requires the deflection gage or indicator to be（）Aplaced as near the crankpin axis as possibleBremoved each time the crankshaft is repositionedCleft in place for all four readingsDreset to zero for all four readings
单选题
Diesel engine crankshaft deflection readings are generally taken at four crank positionsGood engineering practice requires the deflection gage or indicator to be（）
A
placed as near the crankpin axis as possible
B
removed each time the crankshaft is repositioned
C
left in place for all four readings
D
reset to zero for all four readings
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