首页
登录
职称英语
The word laser stands for "light amplification by stimulated emission of rad
The word laser stands for "light amplification by stimulated emission of rad
游客
2023-07-28
12
管理
问题
The word laser stands for "light amplification by stimulated emission of radiation". To many people lasers are very【B1】______, but a laser is simply a【B2】______that produces a very strong light. The light from a laser is called【B3】______light because it is light that moves in only one direction. In contrast, incoherent light, like the light form the sun or a light【B4】______, moves away from its【B5】______in all directions and【B6】______in a narrow beam.
As soon as the laser was developed, scientists began thinking of practical【B7】______for it. One of the earliest uses was to make extremely【B8】______measurements of distance and speed. As time passed, many more applications for the laser were developed.【B9】______.From laser printers to technology by which whole encyclopedias of information can be stored on a laser disk (called a CD-ROM) and read by a computer, lasers are revolutionizing computers.
Lasers have also made a big difference in the way telephones work. Instead of changing sound waves to electricity that travels through copper wire,【B10】______One such fiber can carry more than a million conversations at the same time!
【B11】______. [br] 【B4】
选项
答案
bulb
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/2877592.html
相关试题推荐
【B1】[br]【B18】A、stimulatedB、motivatedC、educatedD、activatedB根据选项的含义可以同时排除A、C
[originaltext]Agoodreaderreadsfastandunderstandsmostofwhatheors
[originaltext]Agoodreaderreadsfastandunderstandsmostofwhatheors
Thewordlaserstandsfor"lightamplificationbystimulatedemissionofrad
Thewordlaserstandsfor"lightamplificationbystimulatedemissionofrad
Thewordlaserstandsfor"lightamplificationbystimulatedemissionofrad
Thewordlaserstandsfor"lightamplificationbystimulatedemissionofrad
Thewordlaserstandsfor"lightamplificationbystimulatedemissionofrad
Thewordlaserstandsfor"lightamplificationbystimulatedemissionofrad
Thewordlaserstandsfor"lightamplificationbystimulatedemissionofrad
随机试题
[originaltext]Mobilityindevelopingworldcitiesisaverypeculiarchalle
在教育大会上说,教育在国家发展中起基础性地位,你怎么看?
大型电站煤粉锅炉的炉膛出口烟温一般为()。A.800~1000℃ B.90
随着内部审计作用和重要性的不断提高,内部审计活动也面临挑战,多种因素使内部审计活
合格投资者应在每个会计年度结束后()个月内,向国家外汇管理局报送上一年度境外
BP是指A.英国药典 B.欧洲药典 C.美国药典 D.欧盟药典 E.WH
作真菌培养时,取分泌物的部位是A.双侧腭弓 B.咽部 C.扁桃体 D.溃疡
资产变现能力越(?),银行的流动性状况越(?),其流动性风险也相应越(?)。A.
女性,13岁,昨日进食海鲜,今晨开始畏寒、发热、腹痛,以左下腹痛为重,腹泻伴明显
建设单位编制年度投资计划时,通常所依据的建设工程定额是( )。A.概算指标
最新回复
(
0
)