妊娠期间心搏量和心排出量均增加至高峰是在() ["孕32~34周","孕3~4周","怀孕20周左右","临产","怀孕16周左右"]
全身用氟预防龋齿研讨会上,专业人员就各种措施和方法进行探讨,首先讨论的是饮水加氟 ["
从牙面分析,最佳防龋效果在()。A.唇面","舌面","颊面","

面","光滑面"]
腹痛的概念。
汽轮机单缸进汽的危害是()。 ["A、排汽温度升高;","B、推力轴承烧瓦;","C、轴向推力增大;","D、真空下降。"]
女,2岁,咳嗽,结合图像,最可能的诊断是() ["先天性肺不张","细支气管肺炎","先天性支气管闭锁","先天性囊性腺瘤样畸形","肺隔离症"]
发热的病史采集要点。