单项选择题
A.直径d=1200mm圆形承压板 B.1390mm×1390mm方形承压板 C.1200mm×1200mm方形承压板 D.直径d=1390mm的圆形承压板
A.3.5MPa B.6.5MPa C.9.5MPa D.12.5MPa
A.0.100,0.180 B.0.125,0.160 C.0.150,0.140 D.0.175,0.120