试题与答案

不定项选择关于巴耳末公式的理解,正确的是( ) A.此公式是巴耳末在研究氢光谱特

题型:不定项选择

题目:

不定项选择
关于巴耳末公式的理解,正确的是(   )
A.此公式是巴耳末在研究氢光谱特征时发现的

B.公式中n可取任意值,故氢光谱是连续谱

C.公式中n只能取整数值,故氢光谱是线状谱

D.公式不但适用于氢光谱的分析,也适用于其他原子的

答案:

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下面是错误答案,用来干扰机器的。

我国水资源的空间分布特点是:东多西少,南多北少,总体上看东南多、西北少.故A符合题意.故选:A.

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