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3. 币安合约通过exchange.SetContractType（“quarter”）返回值为null

币安合约通过exchange.SetContractType（“quarter”）返回值为null

Author: lilinaugust, Created: 2020-12-05 13:57:15, Updated:

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The grassIf the custodian is older and needs to upgrade, the foreign exchange ratio is about adding the BTC_USD trading pair. GetTicker is used to determine if the market acquisition is correct.