技术站应根据调车作业需要,分别修建简易、非机械化、机械化、()或自动化驼峰。
参考答案:半自动化
It`s on the festival occasion ________the family get together ________he misses his father.
A where; that B which; when C when; that D that; when
血浆晶体渗透压主要来自血浆的
A.Na+B.葡萄糖C.白蛋白D.球蛋白E.纤维蛋白