Protect environment(环境保护) The earth scale change of climate has brought a new kind of natural disaster and the developed and complicated city system is holding a latent risk of expanding the damage artificially.Also people has been spoiling the health since the immense quantity of chemicals have been produced and already used in pursuit of convenience and various toxic substances have been produced unintentionally and accumulated in environment.Therefore,We need some countermeasures from the viewpoint to prevent the city environment form disaster and to manage environmental risks.So we will develop and improve a new risk management system and a disaster prevention system to preserve and create the city environment where people feel easy and sound in their life.
最新问答： 窗的金属配件一般是什么金属? 我的舞台为题目写400字作文 下面某同学探究细铁丝在氧气中燃烧的实验，试回答下列问题． 有质量分数为百分之三十的溶液若干,加了一定数量的水后稀释成质量分数为百分之二十四的溶液,如果再加入同样多的水,质量分数将 请举出一个具体事例.谢谢.Tell me about a time when you developed new way 设x＞0 y＞0且1/x+1/y=16则x+y的最小值为多少 ______ I am concerned, the meeting held last week is a great 火星上有其它生物吗? 一元二次方程的标准形式是什么? AF,BE,CD是三角形ABC的三条高,以BC为直径的圆O与AF交于点G,直径GO的另一端点为K,连接DK,EK与BC交 come and seefor y___at xinhua clothes store[填单词】 一个容量为 的样本数据分组后组数与频数如下： 英语怎么表达恋人之间的晚安 “真理多走一步,哪怕是向同一方向多走一步,它也会变成荒谬绝伦的东西.” 如何把一个圆形桌面对半切开怎样把一张面积1.5米大的圆形桌面对半切开?平分? 如果a+b=-4，ab=2，求式子4a2b+4ab2-4a-4b的值． 请英语老师或英语专业的同学帮我解释一下,帮我解释以下这个关于as if 的语法 如图所示,体积为1×10∧-3 立方米 ,材料相同的两个金属球,分别连接在弹簧的一端,弹簧的另一端固定在容器的底部.甲图 底面是等边三角形,侧面都是等腰三角形的三棱锥是不是正三棱锥?不是要举出反例. 一段圆柱形木头,削成一个最大的圆锥,削去的体积是44立方厘米,则削成的圆锥的体积是( )立方厘米
