A.10000級<3 B.100級<3 C.10000級<1 D.100級<1
A.0/0/3 B.1/3/0 C.2/2/3 D.3/0/3
A.pH4.4-6.2 B.pH8.0-9.6 C.pH5.0-5.2 D.pH5.2-6.8