肛管直肠周围脓肿常继发于
A.肛裂B.肛窦炎C.嵌顿性内痔D.直肠息肉继发感染
参考答案:C
能够被凝血酶结合形成复合物并失去活性的酶是()。
A.FⅦA
B.FVA
C.FXA
D.FⅫA
E.FⅧA
The goods which are carried into and out of the territory by the same vessel or aircraft are defined as
A.transit goods B.transshipment goodsC.through goods D.import and export goods