叶酸可用于治疗下列哪种疾病()
A.缺铁性贫血
B.巨幼红细胞性贫血
C.再生障碍性贫血
D.脑出血
E.高血压
参考答案:B
A breast-feeding neonate will turn his head toward the mother’s breast in a natural instinct to find food. What is the name of this reflex
A. Tonic neck reflex.B. Moro’s reflex.C. Grasp reflex.D. Rooting reflex.
聚合物分子通过()而浓集在岩石孔隙结构表面上。
A、弥散力
B、范德华力
C、氢键力
D、弥散力、氢键力