A:Have you sent the fax to the travel agent?B:_____A.Yes,I haveB.Yes，I doC.Yes. I've done
A:Have you sent the fax to the travel agent?
B:_____
A.Yes,I have
B.Yes，I do
C.Yes. I've done
相关考题：
Kathy, I’d like you to meet Maggie Jacobs.(). Maggie. You’re doing a great job.A、 I‘m pleased to meet youB、 It’s great to see you againC、 I' m happy to meet you too
What can I do for you, Madam?()500yuan in cash to my son in Beijing University.A、 You’d better remitB、 I'd like to remitC、 I'd rather remit
Would you like to come to our party this weekend?().A. Yes, I had great fun at the partyB. No, I’d like to at tend the partyC. I’m sorry that I won’t be able to attend the party
－ It's really a good dinner, isn't it? － _______________________ A. Yes, I'd like to go.B. Yes, the food is just wonderful.C. I'm glad to hear that.D. It's very nice of you to say so.
B 宽度优先（种子染色法）5．关键路径几个定义： 顶点1为源点，n为汇点。a. 顶点事件最早发生时间Ve[j], Ve [j] = max{ Ve [j] + w[I,j] },其中Ve (1) = 0;b. 顶点事件最晚发生时间 Vl[j], Vl [j] = min{ Vl[j] – w[I,j] },其中 Vl(n) = Ve(n);c. 边活动最早开始时间 Ee[I], 若边I由j,k表示，则Ee[I] = Ve[j];d. 边活动最晚开始时间 El[I], 若边I由j,k表示，则El[I] = Vl[k] – w[j,k];若 Ee[j] = El[j] ，则活动j为关键活动，由关键活动组成的路径为关键路径。求解方法：a. 从源点起topsort,判断是否有回路并计算Ve;