47. Which of the following is a benefit of blockchain transactions, according to these passages?
(A) immutability.
(B) speed.
(C) transparency.
(D) all of the above.

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統計： A(0), B(0), C(0), D(1), E(0) #3450193

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題目解析 這道題目要求選擇區塊鏈交易的好...
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