试题内容
（）is a decentralized, distributed and public digital ledger that is used to record transactions across many computers so that the record cannot be alterred retroactively without the alteration of all subsequent blocks and the collusion of the network.
A、Cloud service
B、Blockchain
C、Internet of things
D、Artificial intellingence
查看答案
A、Cloud service
B、Blockchain
C、Internet of things
D、Artificial intellingence
软题库参考答案：B（仅供参考）
软题库解析：正在加载....
