问:王某于去年7月向某农机经营部购买某品牌农用车1辆,一次性付清车款,但使用不到一个月,发动机频频出现故障,经多次修理,仍然无法正常行驶,且当时又是农忙季节。经营者说会派出维修人员,但等了一个多星期都没有人来修。在多次与经营者联系未果的情况下,王某请有关部门鉴定农用车,鉴定结果为该农用车发动机存在产品质量问题。王某找经营者要求更换同型号农用车,并支付鉴定费用200元,但经营者却不予理睬。请问,王某提出的要求合理吗? Q: In July last year, Wang bought a certain brand of agricultural vehicles from a farming machinery operation department to pay for the vehicles at one time. However, after using it for less than a month, the engine frequently failed. After repeated repairs, Wang was still unable to drive normally. And then it was a busy season. The operator said he would send maintenance personnel, but no one had to wait for more than a week to repair. In the case of unsuccessful contact with the operator several times, Wang asked the relevant departments to identify agricultural vehicles, appraisal results for the existence of agricultural products, engine quality problems. Wang looking for operators to replace the same type of agricultural vehicles, and pay the appraisal fee of 200 yuan, but operators are ignored. Excuse me, Wang made a reasonable request?