泰罗寻找到一种最好的干各种体力活的方法，是基于（） A.时间—空间的研究 B.时间—

恶性贫血主要选用（）

A.鱼精蛋白

B.叶酸

C.维生素B₁₂

D.氨甲苯酸

E.硫酸亚铁

If transport costs _____ into consideration at the beginning, the factory would have been built far from its

present place. [ ]

A. will be taken

B. were taken

C. had been taken

D. were being taken

炉渣在冶炼过程中起到哪些重大作用？

膀胱经的合穴是（）。

A.上巨虚

B.下巨虚

C.足三里

D.委阳

E.委中

我参加了北京失业保险，但是不清楚以后如何才能享受失业保险待遇，需满足什么条件？