A.
B.
C.
D.
[单选题]A.淋巴瘤B.纵隔脓肿C.中央型肺癌D.纵隔畸胎瘤E.神经纤维瘤
[单选题]A.条件(1)充分,但条件(2)不充分B.条件(2)充分,但条件(1)不充分C.条件(1)和条件(2)单独都不充分,但条件(1)和条件(2)联合起来充
[单选题]A.条件(1)充分,但条件(2)不充分B.条件(2)充分,但条件(1)不充分C.条件(1)和条件(2)单独都不充分,但条件(1)和条件(2)联合起来充
[单选题]A.192.168.0.0/21B.192.168.0.0/22C.192.168.0.0/23D.192.168.0.0/24
[多选题]A.循环回路B.多个终点节点C.多个起点节点D.两项工作有相同的代号E.节点编号重复
[单选题]A.1B.2C.3D.4
[单选题]A.1B.2C.3D.4
[单选题]A.-1B.-2C.1D.3