A300

?8518.For use in pressurized aircraft, which is generally the least complicated and requires the least maintenance?

发布于 2021-02-18 22:11:21

【单选题】
A ?Chemical oxygen generator systems.
B ?High-pressure oxygen systems.
C ?Low-pressure oxygen systems.

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hesheng 2023-02-18

生活充满了选择，而生活的态度就是一切。

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