眼睑浮肿,延及全身,小便不利,身发疮痍,甚至溃烂,恶风发热,舌红苔薄黄,脉滑数者,证属() ["A.气滞湿阻","B.寒湿困脾","C.湿热蕴结","D.湿毒侵淫","E.脾虚湿困"]
备用床的评估
区域发展政策要:() ["战略清晰、重点突出","特色鲜明、层次清晰","因地制宜、分类指导","政府统筹安排"]
衡量组织兴奋性高低的指标是() ["肌肉收缩强弱","腺体分泌多少","刺激阈大小","动作电位幅度","阈电位水平"]
样品预处理的目的是() ["去除样品中的杂质","富集待测物","排除样品中的干扰","提高分析仪器的灵敏度","消除样品中待测物与基体的反应"]
为什么说PN结具有单向导电性?