矿化信息

在显微镜下看，字母“p”是（　　）

A．b

B．d

C．q

D．p

After a new reform, the number of the products in the factory is now ______ it was in 2003.　　 [ ]

A. three times as larger as

B. more than three times 　　

C. twice as large as

D. as twice large as　　

管理的核心是（）。

A.人

B.资源

C.技术

D.过程

E.结果

朊病毒的主要组成成分是

A．多糖

B．RNA

C．蛋白质

D．DNA

E．脂类

照明稳定性