A.直徑0.8m的圓形鋼板B.0.7m×0.7m的方形鋼板C.直徑0.5m的圓形鋼板D.0.5m×0.5m的方形鋼板
A.膠基箔式應(yīng)變計(jì) B.紙基應(yīng)變計(jì) C.全橋式應(yīng)變計(jì) D.半橋式應(yīng)變計(jì)
A.5° B.10° C.15° D.20°