A.次高壓 B.低壓 C.低壓和中壓 D.中壓
A.0.035MPa B.0.005MPa C.0.002MPa D.0.004MPa
A.小于或等于0.002MPa B.小于或等于0.005MPa C.小于或等于0.006MPa D.小于或等于0.004MPa