(1) Private aircraft are required by regulations to be weighed periodically.(2) Private aircraft are required to be weighed after mak- ing any alteration.Regarding the above statements,
发布于 2021-02-17 01:45:46
【单选题】 A neither No. 1 nor No. 2 is true. B only No. 1 is true. C only No. 2 is true.
