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(1kgcm 2 )
(B)0.3MPa(3kg/cm 2 )
(C)0.5MPa(5kg/cm 2 )
(D)0.7MPa(7kg/cm 2 )
(E)1MPa(10kg/cm 2 )
参考答案
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(A)0.1MPa(1kgcm 2 )
(B)0.3MPa(3kg/cm 2 )
(C)0.5MPa(5kg/cm 2 )
(D)0.7MPa(7kg/cm 2 )
(E)1MPa(10kg/cm 2 )