Few airlines want to impose a total ban on their passengers using electronic devices because_______.
选项:
A: they have other effective safety measures to fall back on
B: they don’t believe there is such a danger as radio interference
C: the harmful effect of electromagnetic interference is yet to be proved
D: most passengers refuse to take a plane which bans the use of radio and cassette players
发布时间:2024-06-07 10:22:34