A.4.5-5.4L/S B.5.5-6.4L/S C.6.5-7.4L/S D.7.5-8.5L/S
A.99.98% B.99.99% C.99.998% D.99.9998%
A.20%左右 B.30%左右 C.45%左右 D.60%左右