试题与答案

可用环剥技术取材的药材是() A.伊贝母 B.麻黄 C.杜仲 D.牡丹皮 E.甘松

题型:单项选择题

题目:

可用环剥技术取材的药材是()

A.伊贝母

B.麻黄

C.杜仲

D.牡丹皮

E.甘松

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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化学小组同学在课外读物中看到:“通常CO2可作灭火剂,但有些物质(如Na)着火,不能用CO2熄灭.”他们决定探究CO2与Na反应的产物.

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【查阅资料】

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