尿中含有不使尿比密增高的物质是() ["A．右旋醣酐","B．放射造影剂","C．尿素","D．高蛋白质","E．高葡萄糖"]
药物由眼球表面进入眼球内组织的途径有() ["A．从泪膜转运入角膜","B．从巩膜表面的血管","C．从结膜血管吸收","D．从房水循环路径进入体循环，再分布到眼内组织","E．从角膜缘血管吸收"]
对机械性损害防护功能最差的部位是() ["A．四肢伸侧","B．掌跖","C．臀部","D．手背"]
影响手足部皮肤温度变化最显著的因素是() ["A．情绪","B．进食","C．环境温度变化","D．年龄"]
体表温度在各部位差异较大，其中最低处在() ["A．四肢末梢","B．会阴部","C．额部","D．躯干"]
左心造影，侧位心室舒张期，左心室的瓣下区有时为锥形，锥底在___________，锥尖朝向_______，锥前缘为_____________，后缘为______________构成。
