【单选题】关于消化道出血的描述,错误的是( )
A.
上消化道短时间出血250~300ml,可引起呕血
C.
出血1500~2500ml不会出现急性周围循环衰竭
【单选题】. — Is there a ____ to the time that I can stay here? — Yes, you must leave here before he comes back.
【单选题】关于上消化道大出血描述错误的是()。
C.
门静脉高压症患者发生上消化道大出血的原因均是胃底食管曲张静脉破裂
【单选题】— Is there any ______ to the time that I can stay here? — Yes, you must leave here before the headmaster comes back. [ ]
【单选题】-Is there any ________ to the time that I can stay here? -Yes,you must leave here before he comes back. [ ]
【单选题】Can't you stay ____ the weekend? And then we can visit some other places of interest here. [ ]
【单选题】—Must I stay here for hours? —No, you _______, You can leave any time.