Point out which one of the following items is not in the charge of Chief Officer in repairing operation().
A. hull cleaning
B. derusting and painting
C. the maintenance of boiler
D. docking and undocking
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排列次序指分类法中()的()。组配式分类法的排列次序取决于一是()即类列内()的();二是分面()。
食品安全法对食品经营者贮存食品的要求是如何规定的?