氧气：干冰：灭火A. 大本钟：故宫：名胜 B. 兔毛：鸭绒 :制衣C. 钢笔：水笔：墨水 D 锌片：钙片：补钙

作者: rantiku 人气: - 评论: 0

问题氧气：干冰：灭火 A. 大本钟：故宫：名胜 B. 兔毛：鸭绒 :制衣 C. 钢笔：水笔：墨水 D 锌片：钙片：补钙

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答案 D

解析氧气和干冰为并列关系，干冰可用于灭火；锌片和钙片为并列关系，钙片可用于补钙。

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