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A  typical lion tamer (驯兽师) in people’s mind is an entertainer holding a whip (鞭子)and a chair .The whip get all of the attention , but it’s mostly for show .In reality , it’s the chair that does the important work .When a lion tamer holds a chair in front of the lion’s face , the lion tries to focus on all four legs of the chair at the same time .With its focus divided , the lion becomes confused and is unsure about what to do next .When faced with so many options , the lion chooses to freeze and wait instead of attacking the man holding the chair. How often do you find yourself in the same position as the lion ? How often do you have something you want to achiever (e,g. lose weight , start a business , travel more ) –only to end up confused by all of the options in front of you and never make progress ? This upsets me to no end because while all the experts are busy debating about which option is best , the people who want to improve their lives are left confused by all of the conflicting information .The end result is that we feel like we can’t focus or that we’re focused on the wrong things , and so we take less action , make less progress , and stay the same when we could be improving . It doesn’t have to be that way .Anytime you find the world waving a chair in your face , remember this :All you need to do is focus on one thing .You just need to get started .Starting before you feel ready is one of the habits of successful people .If you have somewhere you want to go , something you want to accomplish , someone you want to become ….take immediate action .If you’re clear about where you want to go , the rest of the world will either help you get there or get out the way . 小题1:Why does the lion tamer use a chair? A.To trick the lion. B.To show off his skill . C.To get ready for a fight. D.To entertain the audience. 小题2:In what sense are people similar to a lion facing a chair? A.They feel puzzled over choices. B.They hold on to the wrong things. C.They find it hard to make changes. D.They have to do something for show. 小题3:What is the author’s attitude towards the experts mentioned in paragraph 3? A.Tolerant B.Doubtful C.Respectful D.Supportive 小题4: When the world is “waving a chair in your face”, you’re advised to_____. A.wait for a better chance B.break your old habits C.make a quick decision D.ask for clear guidance
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【简答题】机件内部形状的表达 :按剖切范围的大小分为:全剖、_____剖、_____剖
【单选题】在数据封装过程中哪层会加上尾部( )
A.
物理层
B.
数据链路层
C.
网际层
D.
传输层
【多选题】硅肖特基二极管的特点()
A.
多子和少子同时参与导电
B.
开关速度快
C.
反向泄漏电流较 PN 结二极管大
D.
不存在少子存储效应
【简答题】变容二极管的特点是:
【多选题】平面型二极管的特点有( )
A.
一种特制的硅二极管
B.
能通过较大的电流
C.
性能稳定可靠
D.
多用于开关、脉冲及高频电路中
【单选题】二极管的特点:()
A.
单向导电性
B.
单相导电性
C.
单项导电性
【单选题】稳压二极管的特点是?
A.
反向特性曲线很陡,且反向击穿是不可逆的
B.
反向特性曲线很平缓,且反向击穿是不可逆的
C.
反向特性曲线很陡,且反向击穿是可逆的
D.
反向特性曲线很平缓,且反向击穿是可逆的
【简答题】机件内部形状的表达 :按剖切范围的大小分为:全剖、_____剖、_____剖。 按剖切面的种类分为:单一剖切面 (斜剖)、___________的剖切面、___________的剖切面。
【判断题】腾讯课堂、百度传课、网易云课堂、淘宝大学等课程平台都是收费的。()
A.
正确
B.
错误
【简答题】二极管的特点是什么
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