铁缺乏时,供给骨髓造血用的铁是下列哪项提供的()
A.血红蛋白铁
B.肌红蛋白铁
C.易变池铁
D.贮存铁
E.运转中的铁
参考答案:D
The organization, _____ goal is mainly to improve women’s position in the workplace, was founded in 1996.
A.whose
B.of which
C.what
D.of what
简单表述验电的三个步骤?