宇航员翟志刚成功完成的中国历史上首次太空行走,使中国成为第三

宇航员翟志刚成功完成的中国历史上首次太空行走,使中国成为第三个独立掌握出舱活动技术的国家。宇航员出舱时,呼吸所需的氧气主要来自太空服中的呼吸面具。下列物质在一定条件下均能产生氧气,其中最适宜用于呼吸面具中供氧剂的是

A.HNO3                   B.H2O2              C.KClO3             D.Na2O2

 

答案

D

解析:略

 

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