A.96+50-40kPa B.98+50-20kPa C.343+50-40kPa D.170kPa±20kPa~270kPa±20kPa
A.81+1-3mm B.83mm+1mm C.85mm+1mm D.85mm±1mm
A.一點(diǎn) B.兩點(diǎn) C.三點(diǎn) D.四點(diǎn)