【简答题】某产品的加工共有 7 道工序,工序间的关系和完成时间如下表所示。 工序 A B C D E F G 紧前工序 - - A B B C 、 E D 时间(天) 5 5 8 5 4 8 8 ( 1 )画出项目网络图。( 2 分) ( 2 )求各工序的最早开始时间、最早完成时间、最晚开始时间、最晚完成时间和缓冲时间。( 5 分) ( 3 )求关键路径、关键工序及项目工期( 3 分)
【简答题】The lecture on smoking was over at last. As we boys were rushing towards the playground, Jim passed by the table. The watch, which Mrs Smith had 41_____ on the table as she started her lecture, had di...
【简答题】The lecture on smoking was over at last. As we boys were rushing towards the playground, Jim slipped by the table. The watch, which Mrs Smith had ___1___ on the table as she started her lecture, disap...
【简答题】完形填空:用方框内的适当的词填空,必要时用适当形式。 swim seaside in beach river Now we are at the 26 . There are a lot of people on the beach. Some are 27 . Some are lying on the sand and bathing 28 the sun. Over...
【简答题】With the crowd of white men looking on, the narrator and his schoolmates do not know how to react. Some of the boys "lowered their heads, trembling," fearing the implied threat of being lynched if the...