A.
B.
C.
D.
[单选题]A.B.C.D.
[单选题]A.中序B.前序C.后序D.层次
[多选题]A.立式轴流泵B.立式导叶式混流泵C.卧式离心泵D.卧式轴流泵
[单选题]A.脾静脉B.腹主动脉C.胰头D.下腔静脉E.肠系膜上静脉
[单选题]A.肝血管瘤B.原发性肝癌C.肝囊肿D.脓肿E.转移性肝癌