麻黄粉末应检出() ["表皮细胞及气孔","角质层突起","油管","嵌晶纤维","菊糖"]
在同一人群中连续多年用阴道涂片法筛检子宫颈癌,假定此方法的灵敏度和特异度不变,每年查获的子宫颈癌人数将() ["保持不变","不断下降","不断上升","忽高忽低","不能预测"]
依照《药品经营许可证管理办法》规定,《药品经营许可证》许可事项变更包括() ["企业名称","注册地址","经营范围变更","经营方式变更","企业法定代表或负责人变更"]
某广告说用气功疗法在3个月内治疗了1000例高血压病人,其中950例痊愈,治愈率达95%。下列哪个结论正确() ["气功疗法降压效果好,观察3个月95%病人有效","因样本不大,故无法下结论","此法效果可疑,因观察时间不长,5%未显效","无法作出结论,因未设对照组","无法作出结论,因未作统计学检验"]
根头部具环纹的药材有() ["人参","南沙参","前胡","党参","防风"]
路面按其使用性能分为哪几级?路面按其力学特点又分为哪几类?