A.喷头无障碍物遮挡时,不应小于25mm,不应大于150mm
B.喷头有障碍物遮挡时,不应大于850mm
C.喷头无障碍物遮挡时,不应小于75mm,不应大于150mm
D.喷头有障碍物遮挡时,不应大于650mm
E.喷头有障碍物遮挡时,不应大于550mm