下表给出了项目中各活动的乐观估计时间、最可能估计时间和悲观估计时间，则项目的期望完工总时间是 （ ） 天。
- A.36
- B.38
- C.40
- D.42
正确答案及解析
正确答案
解析
首先利用计划评审技术（PERT）计算出项目各工序的完工时间平均值；完工时间平均值=（乐观估计时间+4 ? 最可能估计时间+悲观估计时间）／6（2） 画出本项目的单代号网络图；（3） 通过单代号网络图，可直观地识别出本项目的关键路径为A、E、G；（4） 将关键路径的完成时间平均值加起来，可得出本项目的期望完工总时间为40小时：10+18+12=40。可见C是正确答案。
你可能感兴趣的试题
（ ）is that it provides guidance and direction on how quality will be managed and verified throughout the project.
-
- A.Plan Quality Management
- B.Manage Quality
- C.Control Quality
- D.Project Charter
- 查看答案
（ ）the process of determining,documenting,and managing stakeholder needs and requirements to meet Project objectives.
-
- A.Plan Scope Management
- B.Collection Requirements
- C.Validate Scope
- D.Control Scope
- 查看答案
The information security management system preserves the confidentiality,integrity and availability of information by applying a（ ）.
-
- A.technology management process
- B.resource management process
- C.quality management process
- D.risk management process
- 查看答案
（ ）is a decentralized database,ensure that the data will not be tampered with and forged.
-
- A.Artificial intelligence
- B.Blockchain
- C.Sensing technology
- D.Big datA
- 查看答案
（ ）puts computer resources on the web,and must meet the requirements of super capacity,super concurrency,super speed and super security.
-
- A.Cloud computing
- B.Big datA
- C.Blockchain
- D.Internet of things
- 查看答案