E190的120座位是单一客舱；C919的158是两级；同时航程也不一样。要是再升级，就相当于重新开发一型了

来源: cn_abcd 于 2023-06-01 07:36:16 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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