题目
A.the simple trade era
B.the production era
C.the marketing department era
D.the marketing company era
第2题
A.to think over
B.to be thought over
C.being thinking over
D.being thought over
第4题
B.IP over Opticall
C.IP over SDH
D.IP over AWDM
E.IP over ATM
F.IP over SDW
第9题
A.get over
B.look over
C.take over
D.come over
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