题目:
Project Time Management includes the processes required to manage timely completion of the project, these processes interact with each other. ______ is following the process-Estimate Activity Durations.
A.Estimate Activity Resources
B.Define Activities
C.Develop Schedule
D.Sequence Activities
答案:
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参考答案:D解析: 对于单自由度简谐受迫振动时,动力系数[*]动力系数μ的值取决于激振力频率与自振频率的比值[*],由该公式可见,稳态受迫振动的频率与荷载变化的频率相同,动位移、惯性力以及体系的动内力均...