氧⽓筒内的氧不可⽤尽,压⼒表指针降⾄下列哪项时不可再⽤ ()
A.0. 1MPa (1kg/cm2) B.0.3MPa (3kg/cm2) C.0.5MPa (5kg/cm2) D.0.7MPa (7kg/cm2) E.1MPa (10kg/cm2)正确答案C
氧⽓筒内的氧不可⽤尽,压⼒表指针降⾄下列哪项时不可再⽤ ()
A.0. 1MPa (1kg/cm2) B.0.3MPa (3kg/cm2) C.0.5MPa (5kg/cm2) D.0.7MPa (7kg/cm2) E.1MPa (10kg/cm2)正确答案C