【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（ ）．
①
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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】
真核基因表达的调控主要是在以下几个方面，其中不恰当的是().
①
A.转录水平上的调控
②
B.mRNA加工成熟水平上的调控
③
C.翻译水平上的调控
④
D.营养和环境因素是最主要的
【单选题】
教育可以使原来为少数人所掌握的科学知识在较短的时间内为更多的人所掌握，从而提高劳动生产效率，促进生产力的发展，这说明教育具有（）功能。
①
A.再生产劳动力
②
B.再生产科学知识
③
C.科学研究
④
D.促进科研技术成果的开发利用
【多选题】
有关氨基酰-tRNA合成酶的说明，其中正确的是().
①
A.每种氨基酸至少有一种相应的合成酶
②
B.反应过程中由ATP提供两个高能键
③
C.该酶对氨基酸和tRNA一样具有绝对专一性
④
D.催化氨基酸的羧基与相应的tRNA的3’-末端腺苷酸3’-OH之间形成酯键
【多选题】
打电话中要注意声音的控制技巧，主要包括以下几个方面（）。
①
A.经常作语调练习，语调的轻重往往会代表不同的含义
②
B.勤练习，多动口
③
C.脸带笑，语柔和
④
D.常咬文，纠字音