A.上牙弓前突
B.双牙弓前突
C.
D.
E.
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[单选题]A.B.C.8,-4,-9D.E.
[单选题]A.B.C.8,-4,-9D.E.
[单选题]A.单纯扩散B.主动运转C.易化扩散D.入胞作用E.出胞作用
[单选题]A.1B.2C.4D.5
[单选题]A.1B.2C.3D.5
[单选题]A.1B.2C.4D.5
[单选题]A.5mmB.10mmC.15mmD.20mmE.25mm