根据听到的内容作答____. A) Changing the way of spraying crops. B) Buying some outdoor insect lamps. C) Using a combination of three insecticide. D) Trying to attract new insects onto the crops. Passage Three
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相邻两座二级耐火等级的多层民用建筑,相邻外墙为不燃烧体且无外露的燃烧体屋檐,每面外墙上未设置防火保护措施的门窗洞口不正对开设,且面积之和小于等于该外墙面积的5%时,其防火间距至少应为下列何值?()
道路路面边缘与乔木中心的最小间距是下列哪一项?()
ne Text4baby program is aimed at helping pregnancy women____. A)in the U.S. B)in poor countries C)all over the world D)in Western Eumpean nations