必需微量元素仅占体重的:( )A.0.02%.B.
必需微量元素仅占体重的:()
A、0.02%.
B、<0.02%
C、0.01%
D、<0.01%
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铁是人体内含M最多的一种必需微量元素。
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()是人体必需的一种微量元素,也是体内含量最多的一种微量元素。
A、钙
B、钾
C、铁
D、锌
答案解析 -
碘、硒、铜 属于人体必需的微量元素。()
是
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体内必需微量元素含量最多的是铁。()
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下列属于必需微量元素的是()。
A、汞
B、氟
C、硒
D、锰
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不属于必需微量元素的是()。
A、锌
B、铁
C、硒
D、碘
E、铅
答案解析 -
以下哪一组是必需微量元素?()
ASi、Zn、Cu
BZn、Cu、Se
CSi、Zn、Al
DSi、Zn、Sn
答案解析 -
体内的元素其含量小于体重0.01%者为微量元素。()
是
否
答案解析 -
A.
C. H 、 O 、 N 、 P 等均属于大量元素
B.人体缺铁和缺钙都会引起相关的疾病,故两者均为大量元素
C.人体含量比较少的元素均为微量元素
D.大量元素是人体必需的元素,而微量元素不是人体必需的元素
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答案解析
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