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71、When performing projec activity duration estimates,()is not included in the estimation techniques.
A.Three-point Estimating
B.Analogous Estimating
C.Parametric Estimating
D.Checklist Estimating
参考答案：D
72、Self-driving technologies are important for the research and development in the field of()。
A.Cloud Computing
B.Digital Finance
C.Artificial Intelligence
D.Intelligent Manufacturing
参考答案：C
73、To build a modern logistics system，we should work on the() of its infrastructure, including railways and ports, and promote the integration of cources in the sector.
A.digital transformation
B.new generation of communication technology
C.block-chain technology
D.VR and AR
参考答案：A
74、Information security emphasizes the security attributes of information(data) itself.() is not included in the security attributes.
A.Confidentiality
B.Consistency
C.Interity
D.Availability
参考答案：B
75、()is enforced in 2021。
A.The Civil Code of the People's Republic of China
B.The Tendering and Bidding Law of the People's Republic of China
C.Government Procurement Law of the People's Republic of China.
D.The Personal Information Protection Law of the People's Republic of China
参考答案：D
