A.酸性岩
B.基性岩
C.中性岩
D.喷出岩
[单选题]A.0.44B.0.55C.0.62D.0.71
[单选题]A.缺牙间隙宽B.缺牙间隙窄C.D.E.
[判断题]A.对B.错
[单选题]A.60μFB.30μFC.60F
[单选题]A.B.C.D.