The number of persons which a lifeboat to be launched by falls shall be permitted to accommodate shall be at least the number of spaces that can be provided on the seating arrangements provided footrests are fitted and there is sufficient room for legs and the vertical separation between the upper and lower seat is not less than _______ mm.
发布于 2021-03-04 19:43:30
【单选题】
A 300
B 350
C 400
D 450
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