中新网北京7月29日电 (记者 孙自法)中国商用飞机有限责任公司(中国商飞)消息，北京时间7月29日7时59分，国产大型客机C919高原型首架机在上海浦东国际机场第四跑道起飞，开展首次飞行试验。(完)
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