单选题:下列有关维生素D的叙述,哪项是错误的( ) 题目分类:临床执业助理医师 题目类型:单选题 查看权限:VIP 题目内容: 下列有关维生素D的叙述,哪项是错误的( ) A.维生素D的活性形式是1,25-(OH)2-D3 B.维生素D的两次羟化作用都是在肝中进行 C.促进小肠中钙结合蛋白的合成 D.提高血浆钙、磷含量 E.缺乏时可发生佝偻病 参考答案: 答案解析:
在水利水电工程注册建造师执业工程规模标准中,农村饮水工程的执业工程规模标准根据其( )确定。 在水利水电工程注册建造师执业工程规模标准中,农村饮水工程的执业工程规模标准根据其( )确定。A.等别 B.级别 C.投资额 D.供水人口数量 分类:临床执业助理医师 题型:单选题 查看答案
How can a teacher acquire infinite patience?75 How can a teacher acquire infinite patience?75 分类:临床执业助理医师 题型:单选题 查看答案
Executives of the company enjoyed an ________ lifestyle of f Executives of the company enjoyed an ________ lifestyle of free gifts, fine wine 分类:临床执业助理医师 题型:单选题 查看答案
It is reported that thirty people were killed in a ________ It is reported that thirty people were killed in a ________ on the railway yeste 分类:临床执业助理医师 题型:单选题 查看答案
Whenever a big company ________a small one, the product almo Whenever a big company ________a small one, the product almost always gets worse 分类:临床执业助理医师 题型:单选题 查看答案