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对于一阶系统G(s)=1/(Ts+1),其单位阶跃响应为,响应曲线的斜率初始值为,过渡过程时间(±5%)为 ,超调为。

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已知系统在零初始条件下的单位阶跃响应为1-e^(-t/T),则系统的传递函数为____。

线性连续二阶系统的动态性能分析中,根据阻尼系数ζ的不同,稳定的二阶系统可分为无阻尼、欠阻尼、临界阻尼和过阻尼四种运动状态。对应阻尼系数ζ的取值范围分别是、、和。ζ时,系统处于负阻尼,是不稳定的。

(1) Use the words in the box to complete the sentences below.A. primeB.shapeC.restriction D.reinforce E.match F.channel① Success in the talks will _____ his reputation as an international negotiator.② His ideas had been by his last working experience as aproduct manager.③ The company has worldwide distribution _.④ The background of your website should well with your product and brand.⑤ The government has agreed to impose _________ on these goods

(2) Fill in the blanks to complete the translation of the following sentences.① 在选择卖什么产品前，你最好去调查一下其他的电子商铺店主在卖些什么。You’d better _what other e-shop owners sell before deciding what to sell in your e-shop.② 记住你要选择那些你觉得有趣的商品去卖，否则很快你就会觉得无聊。___ that choose something you find interesting to sell, otherwise youwill get bored soon.③ 他们用了大约一个月的时间才想出他们的网店卖什么产品。It took them about one month to _ what to sell in their e-shop.④ 除了思考卖什么产品，电子商铺店主还需要思考产品的面向群体是谁。Aside from product selection, the e-shop owners should think about who to ________.