化学与生活密切相关。下列做法不会危害人体健康或不存在安全隐患
侯英超 |
发布日期：2010-06-07 14:07:40
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化学与生活密切相关。下列做法不会危害人体健康或不存在安全隐患的是 A．冬天用燃气热水器洗澡时，门窗紧闭 B．厨房中燃气泄漏时，迅速打开排气扇 C．儿童和老年人在医生指导下适量补钙 D．用工业盐亚硝酸钠（NaNO2）代替食盐烹调 |
