题目内容

一起突发中毒事件，暴露人数在1000—1999人;中毒人数在100人及以上且死亡1人或死亡3—9人。属于较大突发中毒事件(Ⅲ级)。()

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A 100-pound child should carry a backpack of more than 20 pounds.

A. Right
B. Wrong
C. Not mentioned

清醒病人，非腐蚀性药物中毒时可先用棉签或压舌板刺激咽喉壁催吐。()

Backpacks with wide， padded straps and a belt can help to avoid problems of sprains and strains. 查看材料

A. Right
B. Wrong
C. Not mentioned

Children should put all the books in their locker. 查看材料

A. Right
B. Wrong
C. Not mentioned