胶体金用于电镜水平的研究,主要包括()。
A、细胞悬液或单层培养中细胞表面抗原的观察
B、单层培养中细胞内抗原的检测
C、组织抗原的检测
参考答案:A, B, C
A schedule is commonly used in project planning and project portfolio management.()on a schedule may be closely related to thework breakdown structure (WBS) terminal elements, the statement of work, or a contract data requirements list.
A.Essences
B.Elements
C.Purposes
D.Issues
路基填土不得使用()、冻土块和盐渍土。
A.略有黏性的砂土
B.生活垃圾土
C.种植土
D.黄土