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单选题
当缩写词或符号作为计量单位时，将它和前面的数字计为一个单词。
A
A.When a capital letter or a symbol is used for a unit of measurement, you should take it and the number before it as a word.
B
B.When used in measurement, the acronym or the symbol and the related number should be taken as a word.
C
C.When you write an abbreviation or a symbol for a unit of measurement, count it and the preceding number as one word.
答案解析
正确答案：C
相关知识点：
缩写符号作计量单位计为一词
