?8575.The purpose of pressurizing aircraft cabins is to(1)create the proper environment for prevention of hypoxia.(2)permit operation at high altitudes.Regarding the above statements,"
发布于 2021-02-18 22:12:16
【单选题】 A ?only No.1 is true. B ?only No.2 is true. C ?both No.1 and No.2 are true.