选择胶体金特性的错误描述()
A.胶体金多与免疫活性物质结合
B.对电解质敏感
C.光吸收波长与金颗粒大小无关
D.微小颗粒胶体金呈红色
E.较大颗粒胶体金呈紫红色
参考答案:C
She told us a story, and her voice sounded _______. We’re interested in it.
A. sweet B. small C. clearly
影响纤维吸湿的外因各有哪些,一般影响规律如何?