短节距56mm的允许偏差为()。A.+2.1mm,-2.1mm B.+2.3m

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问题 短节距56mm的允许偏差为()。A.+2.1mm,-2.1mmB.+2.3mm,-2.3mmC.+2.7mm,-2.0mmD.+2.7mm,-2.2mm

选项 A.+2.1mm,-2.1mm
B.+2.3mm,-2.3mm
C.+2.7mm,-2.0mm
D.+2.7mm,-2.2mm

答案 D

解析 短节距56mm的允许偏差为+2.7mm,-2.2mm。
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