What is DeFi?单项选择题

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What is the main advantage of using blockchain for cross-border payments?

Which platform is known for enabling developers to build decentralized applications (dApps) and smart contracts?

Question at position 18 Which of the following statements best describes a blockchain? (Choose the best answer.) A distributed, immutable ledger that records transactions across multiple nodes.An offline database system used for secure data storage.A network protocol used for email encryption.A centralized ledger controlled by a single entity.

Question at position 15 What role does blockchain technology play in the Bitcoin system?It ensures all Bitcoin transactions remain secret and are never recorded in a central databaseIt prevents peer-to-peer transactions and requires a central institution to approve transfersIt connects groups of transactions into blocks that are chained together over time, creating a distributed ledger of all Bitcoin transactions that anyone can access and updateIt stores user passwords in a centralised bank databaseClear my selection

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