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19。李某为自己的汽车购买了车损险，后来他将汽车转让给了张某。根据《保险法》的规 定，保险合同的转让有效应始自
A
A．李某通知保险公司时 B．车辆转让时C．保险公司同意时 D．张某通知保险公司时
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C
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