我公司公用工程中氢气、氮气、低压蒸汽的总管压力与那一项最接近( )
A 氢气0.2MPA氮气0.05MPA低压蒸汽0.06MPA
B 氢气2MPA氮气0.5MPA低压蒸汽0.6MPA
C 氢气20MPA氮气5MPA低压蒸汽6MPA
D 氢气200MPA氮气50MPA低压蒸汽60MPA.
A 氢气0.2MPA氮气0.05MPA低压蒸汽0.06MPA
B 氢气2MPA氮气0.5MPA低压蒸汽0.6MPA
C 氢气20MPA氮气5MPA低压蒸汽6MPA
D 氢气200MPA氮气50MPA低压蒸汽60MPA.