下面是国家防灾减灾日的徽标。请根据这幅徽标回答问题。(5分)

[注] 三条弧线由上到下分别是红色、黄色、蓝色。
简要说明国家防灾减灾日徽标的构成要素。(2分)
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请谈一谈国家防灾减灾日徽标的创意。(3分)
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