法不溯及既往,是“安民告示”也是“约法三章”
在香港回归23周年前夕,6月30日,十三届全国人大常委会第二十次会议全票通过了《中华人民共和国香港特别行政区维护国家安全法》。同日,香港国安法在香港特区刊宪公布,即日晚11时生效。一法可安香江,香港迎来走出困境、变乱为治、绝境重生的转机。
8.1 致敬中国人民解放军!
没有什么岁月静好,只是有他们负重前行!是他们舍小家顾大家才有了我们今天安定的生活!抗洪抢险,边疆戎守,最美逆行...他们用青春成就热血,用生命捍卫国土,无悔的青春,不变的初心,为所有的中国人民保驾护航!一起致敬最可爱中国军人! 感谢你们让我们无论身在何处都有安全感,有了祖国强大的后盾!为我们中国公民有解放军而骄傲,更为我们身为中国人而骄傲! 山河无恙,有你皆安!
离心泵的常见故障及处理办法
水泵运行中的故障一般分为腐蚀和磨损、机械故障、性能故障和密封故障四类。
这四类故障往往相互影响,难以分开,比如:叶轮的腐蚀和磨损会引起性能故障和机械故障,密封的损坏也会引起性能故障和机械故障。
上海垃圾分类 vs 日本垃圾分类丨我们可以从中获得哪些启示?
国内的大家都耳熟能详,上海的垃圾分类有四个桶,黑桶(干垃圾),褐桶(湿垃圾),蓝桶(可回收物)和红桶(有害垃圾)。对于其内容物的说明更是好记,网上流传的口诀——“猪能吃的叫湿垃圾,猪都不吃的叫干垃圾,猪吃了会死的叫有害垃圾,可以卖出去换猪的叫可回收垃圾”。
全国立即整治!
每年8月份是重特大事故发生相对集中的月份。应急管理部前期已组织多个督导检查组赴危化品各重点地区明查暗访,对7600余家危化品企业、2.2万余处重大危险源开展了专项检查督导。
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