All any insurance policy is, is a contract for services.
任何保险单都是一纸服务的契约。
You can use the services for one session or many with no contract.
您可以使用服务进行一次会议或多次会议，没有合同。
Do you execute a written contract, agreement or engagement letter for services with every client?
是否与每位客户签订书面合同、协议或约定？
Do you execute a written contract, agreement or engagement letter for services with every client?
是否与每位客户签订书面合同、协议或约定？
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