下述矫正特发性脊柱侧凸的手术方法,正确的是()
A.Harrington手术
B.Dwyer手术
C.Luque手术
D.Zielke手术
E.以上都是
参考答案:E
一个三角形和一个平行四边形的高相等,面积也相等,平行四边形的底是20厘米,那么这个三角形的底边长______.
Consumer porcelains in Jingdezhen are not selling well in export market as compared with those made in Liling, Hunan Province and Zibo, Shandong Province.
A.on export market
B.in exporting market
C.in exported market
D.in the export market