A.1/10 B.1/3 C.1/5 D.1/4
A.低壓液化氣體,公稱工作壓力1MPa B.高壓液化氣體,公稱工作壓力20Mpa,15Mpa,12.5MPa C.永久氣體,公稱工作壓力30MPa,20MPa,15MPa D.高壓液化氣體,公稱工作壓力20MPa,15Mpa