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汽车发动机工作原理解析

发动机是一种能够把其它形式的能转化为机械能的机器,汽车发动机种类很多,下图是常见的直列式四冲程四缸汽油发动机结构图:



汽车发动机工作原理

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分类:汽车知识 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 3982

汽车刹车真空助力泵工作原理解析


上图左边是汽车的轮子,右边是刹车总泵,当我们踩刹车时踏板推动刹车总泵推杆,把黄色的刹车油推向各个车轮的刹车卡钳活塞内,刹车油再推动活塞使刹车片对刹车盘产生压力来进行刹车。因为汽车的重量大,惯性力很大,加上行驶速度快,仅凭脚踏的力度去推动刹车系统阻力很大,这就需要外力帮我们增加踩踏板的力量,它就是真空助力泵。


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分类:汽车知识 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 36078
打开微信支付管理,在扣费服务中选择"爱奇艺VIP自动续费",关闭服务即可。



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分类:其他 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 3537

南平各县市医保中心地址及电话



市本级    南平市行政服务中心一楼    0599-8630012    
延平区    延平区八一路367号延平工行大院内二楼    0599-8638393
建阳区    建阳区人民路5号    0599-5837572

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分类:其他 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 43025

[私密日志] 私密日志

该日志是私密日志,只有博主或发布者可以查看!
分类:欧式构件 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 1045

Visual Studio 2017创建MVC5项目示例

分类:Web编程 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 3041

Don’t Use jquery-latest.js[转]

Earlier this week the jQuery CDN had an issue that made the jquery-latest.js and jquery-latest.min.js files unavailable for a few hours in some geographical areas. (This wasn’t a problem with the CDN itself, but with the repository that provides files for the CDN.) While we always hope to have 100% uptime, this particular outage emphasized the number of production sites following the antipattern of using this file. So let’s be clear: Don’t use jquery-latest.js on a production site.

We know that jquery-latest.js is abused because of the CDN statistics showing it’s the most popular file. That wouldn’t be the case if it was only being used by developers to make a local copy. The jquery-latest.js and jquery-latest.min.js files were meant to provide a simple way to download the latest released version of jQuery core. Instead, some developers include this version directly in their production sites, exposing users to the risk of a broken site each time a new version of jQuery is released. The team tries to minimize those risks, of course, but the jQuery ecosystem is so large that we can’t possibly check it all before making a new release.

To mitigate the risk of “breaking the web”, the jQuery team decided back in 2013 that jquery-latest.js could not be upgraded to the 2.0 branch even though that is technically the latest version. There would just be too many sites that would mysteriously stop working with older versions of Internet Explorer, and many of those sites may not be maintained today.

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分类:脚本语言 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 24647
本地调试WEB页面,浏览器中查看源代码时意外发现被植入了一段CSS:

<style>#BAIDU_DSPUI_FLOWBAR,.adsbygoogle,.ad,div[class^="ad-widsget"],div[id^="div-gpt-ad-"],a[href*="cpro.baidu.com"],a[href*="@"][href*=".exe"],a[href*="/?/"][href*=".exe"],.adpushwin{display:none!important;max-width:0!important;max-height:0!important;overflow:hidden!important;}</style>


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分类:操作系统 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 3051
Chrome

"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --incognito


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分类:操作系统 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 6400

jQuery自定义事件添加和触发示例

我们可以用jQuery的on方法在任一对象上添加自定义事件,之后用trigger方法触发自定义事件,代码示例:

<!doctype html>
<html>
    <head>

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分类:脚本语言 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 2309