?8546.Composite oxygen bottles that conform to DOTE- 8162 have a service life of
发布于 2021-02-18 22:11:48
【单选题】 A 5 years or 5,000 filling cycles whichever occurs first. B 10 years or 5,000 filling cycles whichever occurs first. C 15 years or 10,000 filling cycles whichever occurs first.