2019年8月6日

L437 EST

摘要： In these descriptions we shall see how a speech channel of telephone quality maybe conveyed as a series of amplitude value, each value being represent 阅读全文

posted @ 2019-08-06 13:08 keep1 阅读(122) 评论(0) 推荐(0)

2019年8月3日

2019.7.8.3 PA (Power Amplifier) --（1）Classifications of PA 功率放大器类型

摘要：典型结构 Class A Power Amplifier Vi High Class B Power Amplifier Class C Power Amplifier Class D Power Amplifier Class E Power Amplifier 3rd Harmonic-peak 阅读全文

posted @ 2019-08-03 18:29 keep1 阅读(769) 评论(0) 推荐(0)

2019年8月2日

L436 防止晒伤

摘要： Sunburn is an acute reaction in the skin after excessive overexposure to UV radiation. It causes direct damage to DNA, resulting in inflammation and t 阅读全文

posted @ 2019-08-02 08:40 keep1 阅读(151) 评论(0) 推荐(0)

2019年8月1日

2019.8.1英语节课总结

摘要： secretary ['sekrəteri] 外交秘书attorney [ə'tɝni] 律师Security guards 保安Senior /'sinɪɚ/(易读错） supervisor 高级主管 Reading comprehension阅读理解Skin找关键信息：新概念3就是专门训练Sk 阅读全文

posted @ 2019-08-01 20:58 keep1 阅读(233) 评论(0) 推荐(0)

L435 8/20

摘要： Once a group of tourists who were staying at a hotel in Birmingham were having dinner in the restaurant. Fish was brought in and while they were 16eat 阅读全文

posted @ 2019-08-01 11:05 keep1 阅读(243) 评论(0) 推荐(0)

2019年7月31日

2019-07-31 Daily reading ：What are some of your weaknesses?

摘要： I love my work and always give each project 100%, if not 110%.So when I don't feel others are giving their best, I find it a little frustrating.I pref 阅读全文

posted @ 2019-07-31 08:12 keep1 阅读(178) 评论(0) 推荐(0)

2019年7月29日

L2019.7.29 CCC 安全距离

摘要：安全距离及其相关安全要求安全距离包括电气间隙（空间距离），爬电距离（沿面距离）和绝缘穿透距离 1、电气间隙：两相邻导体或一个导体与相邻电机壳表面的沿空气测量的最短距离。 2、爬电距离：两相邻导体或一个导体与相邻电机壳表面的沿绝绝缘表面测量的最短距离。电气间隙的决定：根据测量的工作电压及绝缘等级阅读全文

posted @ 2019-07-29 16:00 keep1 阅读(668) 评论(0) 推荐(0)

L433 What Are the Biggest Lessons You Have Learned in the Corporate World?

摘要： 1. Arriving early and doing nothing is viewed more favorably than staying late and working assiduously. It’s unfair, but it’s only the first boot of r 阅读全文

posted @ 2019-07-29 09:25 keep1 阅读(225) 评论(0) 推荐(0)

2019年7月27日

L432

摘要： In his own lifetime Galileo was the centre of violent controversy; but the scientificdust has long since settled, and today we can see even his famous 阅读全文

posted @ 2019-07-27 18:19 keep1 阅读(239) 评论(0) 推荐(0)

2019年7月26日

l431 Change you career paths

摘要： If you have been working for quite a while and are interested in changing careers at some point in your life, here are some steps to follow: 1 Find yo 阅读全文

posted @ 2019-07-26 08:49 keep1 阅读(206) 评论(0) 推荐(0)