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Good morning everyone and welcome back to another installment of Daily Quiz answers for Xenea Wallet. Today's question is: Which mechanism sets prices in automated market makers? The options are A) Constant Sum, B) Constant Rate, C) Linear, and D) Constant Product.

大家早上好，欢迎回到另一批针对Xenea Wallet的每日测验答案。今天的问题是：哪种机制设定了自动做市商的价格？选项是a）恒定总和，b）恒定速率，c）线性和d）恒定产物。

The correct answer is D) Constant Product.

正确的答案是d）恒定产品。

The term "automated market maker" (AMM) refers to a decentralized exchange (DEX) that uses a liquidity pool to set prices for various assets directly on the exchange, without the need for an intermediary such as a bank or brokerage firm.

“自动做市商”（AMM）一词是指使用流动性池直接在交易所设定各种资产价格的分散交易所（DEX），而无需银行或经纪公司等中介。

In contrast to centralized exchanges (CEXs), which typically use an order book to match buyers and sellers, AMMs rely on a liquidity pool funded by users who deposit equal amounts of two assets, such as ETH and USDC, into a smart contract. This liquidity is then used by traders to execute their trades.

与通常使用订单书匹配买卖双方的集中交易所（CEXS）相反，AMMS依靠由用户资助的流动性池，这些用户资助的用户将相当数量的两个资产（例如ETH和USDC）存入智能合约。然后，交易者使用这种流动性来执行其交易。

The prices on AMMs are determined by a formula that is applied to the tokens in the liquidity pool. One common formula is Constant Product, which states that the product of the two assets in the pool remains constant. For example, if the pool starts with 10 ETH and 100 USDC, then the product is 1,000. If a user wants to buy 1 ETH, they will need to pay USDC at a rate that keeps the product of ETH and USDC equal to 1,000.

AMM上的价格取决于用于流动性库中代币的公式。一个常见的公式是恒定产品，该公式指出池中两个资产的乘积保持恒定。例如，如果游泳池以10个ETH和100 USDC开头，则产品为1,000。如果用户想购买1个ETH，他们将需要以将ETH和USDC的产品保持在1,000的产品的速度支付。

Now, let's break down why the other options are incorrect.

现在，让我们分解为什么其他选项不正确。

Option A) Constant Sum is not used to set prices in AMMs. In fact, the liquidity in the pool is constantly changing as users add and remove funds.

选项A）不使用恒定总和来设置AMM中的价格。实际上，当用户添加和删除资金时，游泳池中的流动性正在不断变化。

Option B) Constant Rate would imply that the price of one asset remains fixed, while the price of the other asset changes accordingly. However, in AMMs, prices are determined by supply and demand, and both prices will change based on user trades.

选项b）恒定利率将暗示一个资产的价格保持固定，而另一资产的价格则相应地变化。但是，在AMM中，价格取决于供求，并且两个价格都会根据用户交易而变化。

Option C) Linear pricing would involve a simple linear equation to set prices, but this is not the mechanism used by AMMs.

选项c）线性定价将涉及一个简单的线性方程来设定价格，但这不是AMM使用的机制。

Therefore, the only correct option is D) Constant Product. This formula is used to set prices in AMMs, and it ensures that the total value locked (TVL) in the liquidity pool remains constant.

因此，唯一正确的选择是d）恒定产品。该公式用于在AMM中设定价格，并确保流动性池中的总价值锁定（TVL）保持不变。

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