医疗机构配制制剂的洁净室温度应控制在()A.18~26℃ B.18~24℃ C.18 发布时间:2018-01-06 02:31 │ 来源:www.tikuol.com 题型:单项选择题 问题: 医疗机构配制制剂的洁净室温度应控制在()A.18~26℃B.18~24℃C.18~30℃D.20~25℃E.20~26℃
题型:单项选择题 在一个重2N,底面积为0.01m2的容器里装8N的水,容器中水的深度为0.05m,把它放在水平桌面上,如图所示。求:(1)水对容器底部的压强和压力;(2)容器对桌面的压力和压强。 查看答案
题型:单项选择题 His business prospered and he became a person of means. Yet, despite his great riches, he gave no arms to the needy and no thanks to his benefactors whose savings () to his welfare.A. had contributedB. contributedC. were contributedD. did contribute 查看答案