题目内容 (请给出正确答案)
提问人:网友l******8 发布时间:2022年3月22日 23:15
[单项选择题]

儿童穿上救生衣穿戴时机为()。

A.穿好之后立即充气

B.穿好之后充一半的气,离开飞机前完全充气

C.把儿童救生衣发给陪伴小旅客的成年人,在着陆前救生衣的一部分必须充气

D.离开飞机前充气

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