肺下积液所致的“膈升高”膈顶最高点位于()
A.偏外1/3
B.偏外2/3
C.偏内1/3
D.偏内2/3
E.偏外1/2
参考答案:A
Always read the on the bottle carefully and take the right amount of medicine.
A.explanations
B.instructions
C.descriptions
D.Introductions
简述使用外科引流的原则。治疗胃肠道瘘时要注意哪三个原则