单选题:利用某些元素与氟的亲和力形成不溶性盐而不能被机体吸收,如补__________可以降低肠道中氟的吸收。

题目内容:
利用某些元素与氟的亲和力形成不溶性盐而不能被机体吸收,如补__________可以降低肠道中氟的吸收。 A.钙
B.铁
C.锌
D.维生素C

参考答案:
答案解析:

老年人缺__________时,可能会影响钙、磷的吸收利用,可导致骨质疏松。

老年人缺__________时,可能会影响钙、磷的吸收利用,可导致骨质疏松。A.氟 B.铁 C.锌 D.铜

查看答案

某以玉米为主食地区,人群中发现了身体裸露性皮炎,尤其是上下肢伸侧皮肤呈对称性皮炎,并伴有草莓舌、腹泻等症状,该情况很可能

某以玉米为主食地区,人群中发现了身体裸露性皮炎,尤其是上下肢伸侧皮肤呈对称性皮炎,并伴有草莓舌、腹泻等症状,该情况很可能是__________。A.癞皮病 B.

查看答案

The best title for the essay is__________.

The best title for the essay is__________.A.HR for HR B.The principles of HR C.T

查看答案

Which o{ the following is an example of a well--written perf

Which o{ the following is an example of a well--written performance standard?___

查看答案

Performance appraisal methods can be broadly classified as e

Performance appraisal methods can be broadly classified as either __________, or

查看答案