A、10min B、5min C、8min D、15min
A、φ240±0.3mm B、φ240-0.3mm C、φ240+0.3mm D、大于φ240+0.3mm
A、0.60~0.704mm B、0.70~0.804mm C、0.50~0.604mm D、0.80~0.904mm