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【简答题】
由原子光谱的超精细结构发现，钠的D1线(589.6nm)又分裂成两条相距为0.0023nm的谱线，这是钠的
能级一分为二的结果。试求该能级的两个子能级的间距。
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参考解析：
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【单选题】Social change is more likely to occur in societies where there is mixture of different kinds of people than in societies where people are similar in many ways. The simple reason for this is that there...
A.
"greater willingness to accept social change"
B.
"quicker adaptation to changing circumstances"
C.
"more respect for different beliefs and behavior"
D.
"greater readiness to agree to different opinions and ideas\
【单选题】Social change is more likely to occur in societies where there is a mixture of different kinds of people than in societies where people are similar in many ways. The simple reason for this is that the...
A.
greater willingness to accept social change
B.
quicker adaptation to changing circumstances
C.
more respect for different beliefs and behavior
D.
readiness to agree to different opinions and ideas