畸形中央尖
A.成釉细胞增生突人牙 * * B.牙齿发育时牙 * * 组织向成釉器突起C.釉牙本质界平直D.釉基质合成、分泌或矿化障碍E.局限性釉质增生
参考答案:B
We’ll visit the West Lake this weekend, ________ the City Hangzhou is famous .
A.in which
B.of which
C.to which
D.for which
直流四探针发测量电阻率的基本原理是?