某工程双代号网络计划如下图所示,其关键线路有()条。 A.1 B.2 C.3 D.4 发布时间:2017-12-17 12:05 │ 来源:www.tikuol.com 题型:单项选择题 问题: 某工程双代号网络计划如下图所示,其关键线路有()条。A.1B.2C.3D.4
题型:单项选择题 The rescue team didn’t leave until they were able to find no ______ of life in the ruins after the destructive quake.A.symbolB.sightC.signD.signature 查看答案