婴儿期每天每公斤体重需能量为
A.380kJ
B.400kJ
C.420KJ
D.440kJ
E.460KJ
参考答案:E
_____ teaching disabled children for years, he _____ a lot of experience in this field. [ ]
A. Having devoted himself to; accumulated
B. Having devoted to; gathered
C. Devoting to; got together
D. Devoting to; collected
什么叫三元管理体制,它们之间是什么样的关系?