消化道穿孔后,气体不进入大腹膜腔而积留在小网膜囊内,称局限性气腹。常见于()
A.十二指肠后壁穿孔
B.十二指肠前壁穿孔
C.胃后壁穿孔
D.胃前壁穿孔
E.胃下壁穿孔
参考答案:C
Don't worry about the coming exam. I think the more ______ you are, ______ mistakes you'll make. [ ]
A.careful; the less
B.carefully; the fewer
C.carefully; the least
D.careful; the fewer
关于上消化道出血哪项不正确
A.上消化道大量出血后多数可出现低热B.胃内积血250~300ml可引起呕血C.每日出血50~100ml可出现黑粪D.周围血可见晚幼红细胞与嗜多彩红细胞E.急性大出血时血象检查为早期诊断和病情观察的依据