As one of the core technologies of block chains, ( ) refers to the fact that transaction account is performed by multiple nodes distributed in different places,and each node records a complete account, so they can participate in the supervision of transaction legitimacy and testify for it together. (2020年系统集成项目管理工程师下半
 A. intelligent contract
 B. consensus mechanism
 C. asymmetric encryption technology
 D. distributed accounts
 







参考答案: D
参考解析:

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