判断题
A.250KG; B.270KG; C.300KG
A.0.8M; B.1.2M; C.1.5M
A.5CM; B.2-3CM; C.1.5-2CM
A.300MM; B.400MM; C.500MM
A.1/2; B.1/4; C.1/3
A.2φ8; B.2φ6; C.2φ4
A.240mm×370mm; B.370mm×370mm; C.500mm×370mm