【单选题】【消耗次数：1】
下面（ ）不属于双代号网络计划中虚箭线的特点。
①
不消耗时间
②
不消耗资源
③
消耗时间和资源
④
不代表一个实际的施工过程
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关于双代号网络计划中的虚箭线，下列说法中不正确的是(???)。????
①
虚箭线用来表达相关工作的逻辑关系
②
虚箭线所代表的工作不消耗时间
③
虚箭线所代表的可能是实工作，也可能是虚工作
④
虚箭线所代表的工作不需要消耗资源
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