【題目】英語(yǔ)字母的用途很廣泛字母 可表示注冊(cè)商標(biāo)”,字母組合 可表示長(zhǎng)度單位厘米。

A. R, cm

B. Q, mm

C. D, kg

D. K, cm

【答案】A

【解析】根據(jù)Rregister的縮寫,表示注冊(cè)商標(biāo)”,cm是centimrter的縮寫,厘米;故選A

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