A.44.6MPaB.42.4MPaC.43.0MPaD.40.9MPa
A.10s±2s,20mm±2mm,1NB.10s±2s,25mm±2mm,10NC.10s±2s,25mm±2mm,1ND.10s±2s,20mm±2mm,10N
A.1B.2C.3D.4