A.串联 B.并联 C.混联
A.0.1~0.25 B.0.1~0.5 C.0.2~0.5 D.0.25~0.5
A.塑性 B.弹性 C.屈服极限 D.钢性
A.(2.85±0.14)*2 B.2.85±0.14 C.2.85 D.2.8
A.0.5 B.1 C.2 D.0.1