A.0.8,0.4 B.0.2,0.005 C.P≤0.005(MPa) D.0.005,0.45
A.2.0,1.0;1.6,0.7~1 B.1.9,0.9;1.5,0.6~0.9 C.1.7,0.8;1.3,0.5~0.6 D.1.8,0.7;1.4,0.5~0.7
A.5 B.10 C.15 D.20