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Nowadays many scientists depend on radiocarbon for dating age-old objects. An atom of ordinary carbon has six protons and eight
Nowadays many scientists depend on radiocarbon for dating age-old objects. An atom of ordinary carbon has six protons and eight
admin
2010-01-16
70
问题
Nowadays many scientists depend on radiocarbon for dating age-old objects.
An atom of ordinary carbon has six protons and eight neutrons.
选项
A、Right
B、Wrong
C、Not mentioned
答案
B
解析
这句话是错的,答案在第二段第二句:An atom of ordinary carbon,called carbon-12,has six protons(质子) and six neutrons(中子) in its nucleus.…普通的碳原子有6个中子。
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本试题收录于:
职称英语理工类B级题库职称英语分类
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职称英语理工类B级
职称英语
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