吸入性颗粒物所产生的生物活性强弱取决于其
A．溶解度
B．挥发度
C．解离度
D．分散度
E．光学异构
参考答案：D
—I think it is _____ picture.
—I agree with you. [ ]
A. a quite beautiful
B. very a beautiful
C. quite a beautiful
活、鲜或冷的海胆（球海胆属、拟
