慢性胰腺炎USG表现中,哪项错误()
A.胰腺弥漫性增大
B.胰腺外形不规则
C.内部回声不规则增粗、增强
D.主胰管扩张>3mm
E.常伴发假性胰腺囊肿
参考答案:A
---Do you know ____ boy who can play ______ violin?
---Yeah! He is ___ artist. He also plays ___ football very well.
A.a; a; the; /
B.The; a; a; the
C.the; the; an; /
D.The; an; a; /
上肢浅静脉较为恒定的主干有哪些?各注入于何处?有何临床意义?