A.最大允許工作壓力5% B.設(shè)計(jì)壓力的10% C.最大允許工作壓力15% D.設(shè)計(jì)壓力的20%
A.10% B.25%~35% C.50% D.60%
A.15%~25% B.100% C.150% D.200%