A.3~6個(gè)月 B.5~9個(gè)月以后 C.6個(gè)月以后 D.2歲以后 E.3歲以后
A.促進(jìn)鈣磷經(jīng)腸道吸收作用增強(qiáng) B.抑制腎曲小管對(duì)麟的吸收,增進(jìn)對(duì)鈣的重吸收 C.抑制骨鹽溶解,使血清鈣含量降低 D.使7-脫氫膽固醇變?yōu)槟懝腔?br /> E.促進(jìn)膽骨化醇轉(zhuǎn)化為25-羥膽骨化醇