关于挖矿说法错误的是（）

A.块的高度数值大
B.块产生后至今的时间长
C.该块里面所有的UTXO产生后的年龄总和
D.该UTXO被记录到区块链为止所经历过的区块数

The height of block A. is significant
b.B. long since the formation of block
C. The total age of all UTXOs in the block and
D. The UTXO was recorded as the number of blocks experienced until the block chain.

A.通用密钥
B.特殊密钥
C.公开密钥
D.私有秘钥

A. General Key
B. Special Key
C. Public Key
D. Private Key

A.字符串
B.条形码
C.QR码
D.Uuencode编码

A. String
B. bar code
C.QR code
D.Uuencode

A.可获取性
B.便利性
C.随机性
D.安全性

A. Accessibility
B. Accessibility
C. Random
D. Security

A.私钥
B.公钥
C.数字签名
D.智能合约

A. Private key
B. Public key
C. Digital signature
D. Smart contract

A.对称密码算法
B.椭圆曲线算法
C.哈希函数
D.RC4算法

A. Symmetric code algorithm
B. Elliptical curve algorithm
C. Hashi function
D.RC4

A.冷钱包（硬钱包）与热钱包的区别为是否接入互联网
B.轻钱包一般是指不储存全节点数据的钱包
C.数字货币钱包的私钥丢失了，可以通过钱包开发商找回
D.一般而言，冷钱包的安全系数比热钱包高

A. The difference between cold wallets (hard wallets) and hot wallets is that small wallets with Internet access (
B. Light wallets generally mean that wallets without full node data (
C.) have lost their private keys and can be recovered through wallet developers (
D.) generally, cold wallets have a higher safety factor than hot wallets.

A.冷钱包
B.热钱包
C.网络钱包
D.交易所钱包

. Cold wallet
B. Hot wallet >br/>C. Net wallet
D. Exchange wallet

A.冷钱包和热钱包
B.交易所钱包与非交易所钱包
C.大钱包与小钱包
D.线上钱包与线下钱包

A. Cold and hot wallets
B. Exchange wallets and non-exchange wallets
C. Big wallets and wallets
D. Wallet and underline wallets

A.手抄
B.拆分保存
C.截图
D.加密

A. Copy
B. Split and save
C. Screenshot
D. Encryption