【简答题】The engine and propeller on most single-engine airplanes are mounted on the front of the fuselage.
【单选题】某肝硬化患者,述乏力、食欲不振。查体:神清、消瘦、轻度黄疸,肝脾轻度肿大,移动性浊音阳性。X线钡餐检查提示食管-胃底静脉曲张。该患者的饮食护理中不恰当的是
【单选题】会阴湿热敷的热敷垫一般多长时间更换一次()。
【简答题】Doors are mounted on the car housing with hinges.