烟草企业在售后维护方面考核供应商是否采取了()的价格和成本。
参考答案:合理
--- Do you think Bob will attend the meeting this afternoon?
--- ______.
A.I hope not
B.I don’t hope so
C.I don’t think it
D.I hope he would
断指再植吻合血管时,吻合动静脉比例多少为宜
A.1:1
B.1:2
C.1:3
D.2:3
E.2:1