问题
问答题 简答题
对油类着火，采用蒸汽灭火有什么要求？
答案
参考答案：
其蒸汽灭火的浓度不宜小于35％（空间体积），即每立
方米的空间不得少于0.283Kg蒸汽
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对油类着火，采用蒸汽灭火有什么要求？
参考答案：
其蒸汽灭火的浓度不宜小于35％（空间体积），即每立
方米的空间不得少于0.283Kg蒸汽
Danny is a schoolboy. He 36 in a small town. His home is about ten miles 37 school and the roads are not flat(平坦的). So it’s 38 for him to get to school. He 39 at about five thirty every day and has breakfast. Then he 40 school at around six o’clock. First, he 41 his bicycle to the bus station. That takes about forty minutes. 42 the bus takes him to school. It usually takes about thirty minutes. Sometimes he has 43 time for breakfast at home, so he has something for breakfast on the bus. “I’ve never taken trains. It must be a lot 44 fun than taking buses,” says Danny. He studies very 45 at school. He hopes he can go to school in a big city some day. He can take a train to school then.
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