我国的《公路沥青路面再生技术规范》建议水泥等活性填料一般不超过()
A.1%
B.1.5%
C.2%
D.2.5%
参考答案:B
This series of products ______ in special price for a month to promote its sales from next month.
A.are
B.is
C.has been
D.is to be
马德隆畸形是由于()
A.尺骨近端骨骺发育障碍
B.桡骨近端骨骺发育障碍
C.尺骨远端内侧骨骺发育障碍
D.桡骨远端骨骺内侧发育障碍
E.以上均不是