世界卫生组织规定的高血压标准是() ["A．血压≥160／95mmHg","B．血压≥140／90mmHg","C．血压≥160／90mmHg","D．血压≥160／105mmHg","E．以上都不是"]
试述痤疮的病因和发病机制。
颅板较薄的部位是() ["A．颞骨","B．枕骨鳞部","C．额骨垂直部","D．枕顶部","E．枕骨粗隆部"]
下列组合，正确的是() ["A．骶椎-向头侧倾斜15～20°角","B．尾椎-向足侧倾斜15°角","C．骶椎-向头侧倾斜5～15°角","D．腰骶关节-向头侧倾斜15～20°角","E．骶髂关节-向头侧倾斜5～10°角"]
心脏病患者用力排便而引起的严重意外是() ["A．肛裂","B．心脏骤停","C．直肠曲张","D．便血","E．以上都不是"]
详述几种常用于治疗痤疮的内用药。
