多項(xiàng)選擇題
A.HRBF335 B.HRBF500 C.HRB400 D.HRBF400
A.熱軋帶肋鋼筋 B.熱軋光圓鋼筋 C.冷軋扭鋼筋 D.冷軋帶肋鋼筋
A.25mm B.28mm C.22mm D.18mm
單項(xiàng)選擇題
A.0.001g B.0.002g C.0.003g D.0.004g
A.18mm B.14mm C.20mm D.12mm
A.0.1g B.0.01g C.0.001g D.0.0001g
A.HRB335 B.HRB400 C.HRB455 D.HRB500
A.335級(jí) B.455級(jí) C.500級(jí) D.400級(jí)
A.±1℃ B.±2℃ C.±3℃ D.±0.5℃
A.27% B.28% C.29% D.30%
A.D=A B.D=2A C.D=0.5A D.D=2.5A