单词:obscuration-type photoelectric smoke detector
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TEXT Seen through the eyes of a young friend Einstein was a simple, modest and ordinary man. The professor and the Yo-yo My father was a close friend of Albert Einstein. As a shy young visitor to Einstein's home, I was made to feel at ease when Einst
A: Hello, this is Betty. B: Hi, Betty. Larry here. How many smoke detectors are in your apartment? A: Actually, I have two. B: Are the batteries fresh? A: Both batteries are good. B: Great. I need to come by and check them myself. A: No problem, when
Science and technology. 科技。 Photoelectric cells. 光电池。 To dye for. 利用染料进行能量转化。 A new type of cell may bring solar energy indoors. 一种新型电池也许能带来室内太阳能。 THE phrase indoor solar power sou
My cooking has always been the target of family jokes. One evening, as I prepared dinner a bit too quickly, the kitchen filled with smoke and the smoke detector went off. Although both of my children
四六级阅读占考试的比重很大,很多考友也为阅读烦恼不已,该怎么办呢?两个字:多看! 所以,从今天开始,每天会节选一些文章和大家一起阅读。 接
Presenter: ___________________ in ___________ in New Jersey: they've done it in New York ____________, and they've done it in California and ____________________. How would you ______ when New Jersey's turn comes to ______? Bruce in South Tom's River
A: Hello, Betty speaking. B: Hey, Betty. This is Larry. Tell me how many smoke detectors you have, please. A: This apartment came with one, and I installed another one. B: Are there fresh batteries in each of them? A: Each detector beeps when the bat
A: Hello, this is Betty. B: Hello, Betty. This is Larry. How many smoke detectors are on your ceiling? A: I have two smoke detectors. B: Do you have fresh batteries in both of them? A: Both batteries are pretty fresh. B: Very good. I have to come by
A: Hello, this is Betty. B: Hi, Betty. Larry here. How many smoke detectors are in your apartment? A: Actually, I have two. B: Are the batteries fresh? A: Both batteries are good. B: Great. I need to come by and check them myself. A: No problem, when
A: Hi, this is Betty. B: Hi, Betty. It's Larry. I need to know how many smoke detectors are in your apartment. A: There was one when I moved in. Then I added one. B: Do both detectors have fresh batteries? A: I always keep them fresh. I don't want to
Al Gore accepted the Nobel Peace Prize in 2007 along with Rajendra Pachauri accepting on behalf of the UN's intergovernmental panel on climate change for their work to sound the alarm over global warming. The Six Nobel Prizes are traditionally awarde
Michelle Wright : A national survey reveals gas prices are down 1.5 cents this week to a nationwide average of 2.93 for a gallon of self-serve regular. Federal investigators say they've found 15 examp
Science and Technolgy. 科技。 Photoelectric cells. 光电池。 To dye for. 染料光电池。 A new type of cell may bring solar energy indoors. 一种新型电池有望将太阳能引进室内。 THE phrase indoor solar power sounds like an oxym
But the landmark eventthe dawn of a new agecame in 1905, when there appeared in the German physics journal Annalen der Physik a series of papers by a young Swiss bureaucrat who had no university affiliation, no access to a laboratory, and the regular
Rebecca: Look, theres smoke coming from six stories up. Hugh: Yes, I know. Didnt you hear the fire alarm go off upstairs a few minutes ago? Rebecca: No, but Im really glad theres a fire station only a few blocks away. Hey look, theres the fire engine
Science and technology 科学技术 Photoelectric cells 光电池 To dye for 染料光电池 A new type of cell may bring solar energy indoors 一种新型电池有望将太阳能引进室内 THE phrase indoor solar power sounds like an oxymoron. 室内
Time again for our Website of the Week, when we showcase interesting and innovative online destinations. The world of physics has changed a lot since I went to school. More powerful particle accelerators atom smashers, they used to call them have all
My cooking has always been the target of family jokes. One evening, as I prepared dinner a bit too quickly, the kitchen filled with smoke and the smoke detector went off. Although both of my children had received fire-safety training at school, they
Marie Curie was born in 1867. She is one of the greatest scientists ever to have lived. She was a pioneer in the field of radioactivity and discovered the chemical elements radium and polonium. Curie is the only person ever to win two Nobel Prizes in
Voice 1 Welcome to Spotlight. I'm Adam Navis. Voice 2 And I'm Marina Santee. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 We use it to cook. We use it