肺癌,气阴两虚型,咯痰不利,痰少而黏者,宜加用() ["百部、冬花等","贝母、瓜萎、杏仁","黄芪、太子参、白术等","白及、鲜茅根、仙鹤草、蒲黄等","地骨皮、白薇、银柴胡、五味子等"]
氢气生产间为什么要有良好的自然通风?
实质上是将单向免疫扩散与电泳相结合,在直流电场中加速定向扩散的单向免疫扩散技术() ["单向扩散法","双向扩散试验","对流免疫电泳","免疫电泳","火箭免疫电泳"]
嗜碱性点彩红细胞胞质中含有()。 ["DNA","核糖体","变性颗粒","变性RNA","变性脂蛋白"]
抗体的纯度鉴定选择何种物质作为凝胶电泳支持物() ["琼脂糖","琼脂糖珠4B","聚乙二醇","硫酸铵","聚丙烯酰胺"]
造成增益的原因是什么?