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问题 单项选择题

在火炬信号前停车后，列车以在隙望距离内能随时停车的速度继续运行，在半自动闭塞区间，经过（）后可恢复正常速度运行。

A.1km

B.2km

C.3km

D.5km

答案

参考答案：A

问答题 简答题

为什么庞统不被孙权重用？
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单项选择题

Which of the following statements is true about the WBS

A．The WBS is a deliverable oriented hierarchical decomposition of the work to be executed by the project team, to accomplish the project objectives and create the required deliverable

B．The WBS is an unstructured list of activities in chart for

C．The WBS is the same as the organizational breakdown structur

D．The WBS refers to the bill of material
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