?8571.High-pressure cylinders containing oxygen for avia- tion use can be identified by their

发布于 2021-02-18 22:12:12
【单选题】
A ?green color and the words ^BREATHING OXYGEN** stenciled in Vinch white letters.
B ?yellow color and the words "AVIATOR'S BREATHING OXYGEN" stenciled in 1dnch white letters.
C ?green color and the words ''AVIATOR'S BREATHING OXYGEN5, stenciled in 1-inch white letters.

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