A.0.05-0.15;0.03 B.0.1-0.3;0.05 C.0.2-0.4;0.1
A.30s~1min B.1min~2min C.2~3min
A.必須保證“一滴不漏” B.允許泄漏 C.應(yīng)當(dāng)有適當(dāng)泄漏