A.間隙 B.過(guò)渡 C.過(guò)盈 D.過(guò)渡或過(guò)盈
A.15°~30° B.45°~60° C.60°~75° D.92°~95°
A.φ20+0.0210 B.φ20+0.014+0.007 C.φ20H7(+0.015+0.005) D.φ20+0.010