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– Oh, God! I’ve made such a mistake! –()
(A) Oh, nothing!
(B) Never mind. We all make mistakes.
(C) You should blame yourself.
(D) Don’t worry.
参考答案
更多 “ – Oh, God! I’ve made such a mistake! –() (A) Oh, nothing!(B) Never mind. We all make mistakes.(C) You should blame yourself.(D) Don’t worry. ” 相关考题
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—I’m sorry.I gave you the wrong message.—()
A.Oh, I’m sorry that you did.B.How foolish of you to do so.C.The wrong message? Oh, yes, you did!D.Oh, that’s all right.Please be careful next time, though.
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A.didB. gotC. passedD. made
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I've _____ these lines again and again but I still keep forgetting them.A. gone offB. gone aboutC. gone overD. gone through
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I ()supper when I()someone knocking at the door.A、made . . . HeardB、made . . .was heardC、was making . . . was hearingD、was making . . . heard
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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;
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