【单选题】【消耗次数：1】
一质点从高为处以初速度垂直下落，选轴垂直向上（如图），则该点的运动方程为<img src=https://huaweicloudobs.ahjxjy.cn/F16BF78BF15A9427E57978CFAB6508E0.png title=QQ截图20190715141952.png alt=QQ截图20190715141952.png/>
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<img src=https://huaweicloudobs.ahjxjy.cn/D4B971C8078000571C89FEBE62857954.png style= title=3.png/>
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<img src=https://huaweicloudobs.ahjxjy.cn/07BEB4DDA7E9BBA199C6D4D607E6CEED.png title=2.png style=white-space: normal;/>
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<img src=https://huaweicloudobs.ahjxjy.cn/8BF5518CD69354475BF92E1141A61903.png title=1.png style=white-space: normal;/>
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<img src=https://huaweicloudobs.ahjxjy.cn/A8B103314B0F6CA97646C6D84752ABC7.png title=4.png style=white-space: normal;/>
参考答案：
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随机题目
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()就是坚持农业农村优先发展，巩固拓展脱贫攻坚成果，加快建设农业强国。
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建设现代化产业体系
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全面推进乡村振兴
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促进区域协调发展
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构建高水平社会主义市场经济体制
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广大青年要坚定不移听党话、跟党走，怀抱梦想又脚踏实地，敢想敢为又善作善成，立志做（）的新时代好青年，让青春在全面建设社会主义现代化国家的火热实践中绽放绚丽之花。
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有理想
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敢担当
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能吃苦
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肯奋斗
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增进民生福祉，提高人民生活品质。紧紧抓住人民最关心最直接最现实的利益问题，坚持（），采取更多惠民生、暖民心举措，着力解决好人民群众急难愁盼问题，健全基本公共服务体系，提高公共服务水平，增强均衡性和可及性，扎实推进共同富裕。
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尽力而为
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量力而行
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深入群众
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深入基层