【判断题】【消耗次数：1】
佝偻病、高钙血症、手足抽搐是缺乏矿物质钙钙质。
①
正确
②
错误
参考答案：
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相关题目
【单选题】
佝偻病的发生是由于缺乏（ ）．
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②
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③
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④
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随机题目
【单选题】
当高层建筑结构采用时程分析法进行弹性时程分析时多条时程曲线计算所得结构底部剪力小于振型分解反应谱法求得的底部剪力的80％时，其底部剪力应按下列何值取用？（）
①
至少按60％取用；
②
至少按70％取用；
③
至少按80％取用；
④
至少按90％取用。