题目( ) A light bulb is widely used in our life. A. everyday B. every day C. some day D. some days相关知识点: 试题来源: 解析 灯泡在我们日常生活中被广泛使用。 every day副词,每天;everyday 形容词,日常的,平常的。 A.反馈 收藏
Challenge The lifetime, in years, of a light bulb is modelled by the random variable Twith probability density function (t)=1.25e-1.2511≥0010Find c the probability that a light bulb lasts for more than 3 years 相关知识点: 试题来源: ...
题目【题目】ChallengeThe lifetime, in years, of a light bulb is modelled by the random variablew; Twith probability density function:f(r)=1.25e-1.251 1≥010Find:c the probability that a light bulb lasts for more than 3 years. 相关知识点: ...
The lifespan of a brand of light bulb is said to be normally distributed with μ =600 days and σ =100 days.Sketch a normal distribution curve to show the above data. Label the horizontal axis clearly. 相关知识点: 试题来源: 解析
— I agree with you. We can do as many things in the evenings as in the daytime. A: invention B: discovery C: introduction 相关知识点: 试题来源: 解析 A 考查名词辨析。A、invention发明;B、discovery发现;C、introduction引入。句意:—电灯泡的发明使我们的生活更容易了。—我同意。我们在晚上可...
A lighting accessory device is described for rectifying the alternating current voltage input to a conventional light bulb. The device includes an insulator separator plate having a diode inserted to its periphery, the diode being connected to contact plates above and below the insulator separator ...
a因为我了解XISHAN ECO-TRAVEI FARM Because I understand XISHAN ECO-TRAVEI FARM[translate] aI lie down when I speak in front of class 当我在类前面时,讲话我躺下[translate] a他正在移动一张桌子 他正在移动一张桌子[translate] a长寿命照明灯泡 Long life illumination light bulb[translate]...
And thiskind of materal could be easily found and7 a ittle money. In this way, the mot helpful invention-the light bulbs wee invented successfully81897Then the light bulb began to be9 and people used i every day. Now we have dfferent kinds ofcolofullight at homes. Lif becomes conve...
翻译下列短语1.当然了of course2.灯泡a light bulb3.谈论talk about4.改变某人的生活change one' life5.过上更好的生活live a better life6.历史上in history7.在白天in the day8.彼此;互相each other/one another9.到达某地arrive at/in sp = get to sp.10.变得激动、兴奋_get excited 相关知识点: ...
Life now-adays:The light bulb Inventor: Time: Life before the invention: Life after the invention: 相关知识点: 试题来源: 解析 The telephone: Inventor: Alexander Graham Bell Time: 1876 Life after the invention: After the invention of the telephone, people could communicate with each other over...