可避免“可溶性成分迁移”的干燥方法是() ["沸腾干燥","微波干燥","冷冻干燥","吸湿干燥","真空干燥"]
关于水泥混凝土路面滑模摊铺机铺筑施工的说法,错误的是() ["摊铺机前布料应采用机械完成","抗滑纹理做毕,应立即开始保湿养护","卸料、布料速度与摊铺速度协调一致","摊铺中应经常检查摊铺机的工作情况和位置"]
北京医保住院报销起付线多少?
只有恒速干燥阶段,没有降速干燥阶段的干燥方法是() ["沸腾干燥","微波干燥","冷冻干燥","吸湿干燥","真空干燥"]
男性,53岁,右胸不适,咳嗽、咳痰月余,近一周痰中带血无发热,吸烟30年,每日吸烟16支。经检查诊断为鳞状细胞癌,治疗为() ["化疗","放疗","右肺肿物切除术","化疗加免疫治疗","放疗加化疗治疗"]
配制pH=5.0的缓冲溶液,应选择哪一种缓冲剂?缓冲对的用量比率是多少?