釉牙骨质界中最常见的情况是()。
A.少量牙骨质覆盖在釉质表面
B.釉质与牙骨质端口相接
C.牙釉质覆盖牙骨质
D.釉质和牙骨质分离
E.以上都不是
参考答案:A
.
“There is a great potential for the development of Sino-U.S. trade, ______ is in line with the interests of the two countries and their people,” Wu said
A.which
B.who
C.that
D.as
百分等级反映数据在其次数分布中的()。
A.相对地位
B.集中趋势
C.误差大小
D.差异程度