71.The  (  )  creates opportunities for more direct Integration of the physical word into computer-based systems, resulting in efficiency improvements, ecomomic benefits, and reduced human exertions.

A.internet of things

B.cloud computing

C.big data

D.mobile internet

72.(   )  is an open, distrbuted ledger that can record transations between two parties efficiently and in a verifiable and permanent way.

A.Internet of things

B.Blockchain

C.Edge computing

D.Artificial intelligence

73.(   )  are those costs that cannot be directly traced to a specific project and therefore will be accumulated and localted equitably over multiple projects by some approved and documented accounting procedure.

A.Direct costs

B.operation costs

C.Indirect costs

D.Implement costs

74.Earned value management(EVM) integrates the scope baseline with the   (   )  baseline, along with schedule baseline,to form the performance baseline, which helps the project management team assess and measure project performance and progress.

A.qulity

B.risk

C.change

D.cost

75.(   )  risks cannot be management proactively and therefore may be assigned a mangement reserve.

A.Know

B.Natural

C.Unknown

D.Human