下列哪项表示有传染性指标（）
A.抗-HBs
B.HBsAg
C.抗-HBc
D.抗-HBe
E.HBeAg
参考答案：E
_______ Lucy _______ Lily can go dancing with you, because they are not allowed to go out on school nights.
A．Either; or
B．Neither; nor
C．Both; and
D．Not only; but also
2206的CDU-BUS由哪2条总线组成？（）
A.cdu；local
B.cdu-tx；iom
C.x-bus；iom
D.local；x-bus
