A.1 B.2 C.3 D.4
A. 0.5m~0.8m B. 0.8m ~1.0m C. 1.0m~1.3m D. 1.4m~1.6m
A.10 B.7 C.5 D.3
A.±1.0 B.±2.0 C.±3.0 D.±4.0
A.15 B.20 C.25 D.30
A.伸長(zhǎng)率數(shù)值 B.屈服強(qiáng)度數(shù)值 C.抗拉強(qiáng)度數(shù)值 D.質(zhì)量等級(jí)