超滤技术属于（）
A.纳滤
B.微滤
C.反渗透
D.高速离心
E.深层截留
参考答案：A
________ enthusiastic about drawing.
A．It seems to be
B．He seems that
C．It seems that
D．He seems to be
阅读下图所示纪念邮票。下列内容最符合其主题的是
“国防现代化” “科学技术现代化”
A．“两弹一星”成功研制
B．“双百”方针提出
C．“载人航天”顺利实现
D．“科教兴国”战略提出
