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单选题
455、每根线由文本和数字组成的编码来识别,由 2 位字母后跟 2 位数字构成。
A
Each wire is comprised by an alphabetical code following 2 alpha digits and 2numerical digits.
B
Each wire is identified by an alphanumerical code comprising 2 alpha digits followed by 2 numerical digits.
C
Each wire consists of an alphanumerical code following 2 alpha digits and 2numerical digits.
答案解析
正确答案：B
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