下列哪项是胃、空肠造瘘术的并发症
A.造瘘口出血B.缺血性坏死C.肠管回缩D.造瘘口狭窄E.肠管脱垂
参考答案:A
.—Would you please telll us your private life and your the date of the marriage?
—_________!
A.No way
B.No doubt
C.No comment
D.No matter
下列不属于矢量叠合种类的是( )。
A.点和面的叠合B.点和线的叠合C.线和面的叠合D.面和面的叠合