激活B细胞产生抗体过程中有T细胞和Mφ参与的抗原物质是
A.完全抗原B.半抗原C.TT-AgD.TD-AgE.共同抗原
参考答案:D
It’s very nice ______ you ______ my parents your best wishes.
A.of ; sending
B.of ; to send
C.for ; sending
D.for ; to send
应用双归保护的业务类型是?()
A.TD
B.LTE
C.BTS
D.CMNET