一、案例与问题的提出1994年7月1日,某电器厂开具一张金额为30万元的转账支票,该30万元于7月2日进入收款人某电梯厂账内,某电梯厂同日出具借条一张,载明借到某电器厂人民币30万元。当日,某电梯厂汇给一深圳公司60万元,深圳公司出具收到电梯厂和电器厂合计60万元的收条。之后,电梯厂、电器厂多次共同向深圳公司催款,1997年4月8日,电梯厂与电器厂签订了一份债权分割协 First, the cases and issues raised July 1, 1994, an electrical plant issued a transfer amount of 300,000 yuan check, the 300,000 yuan on July 2 into the payee an elevator factory account, an elevator The same day the factory issued an IOU, set out to borrow an electrical plant 300,000 yuan. On the same day, a lift factory remitted to a Shenzhen company 600,000 yuan, Shenzhen company received a receipt elevator factory and electrical plant total 600,000 yuan receipt. After that, the elevator factory and the electrical factory repeatedly drove to the Shenzhen company several times. On April 8, 1997, the elevator factory and the electrical appliance factory signed a creditor’s rights division