首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
We’ve all used thermometers to measure temperature but sometimes we need to measure temperature in places you can’t put
We’ve all used thermometers to measure temperature but sometimes we need to measure temperature in places you can’t put
admin
2010-05-09
21
问题
We’ve all used thermometers to measure temperature but
sometimes we need to measure temperature in places you can’t put 【S1】______
a thermometer — for example, inside a rocket engine. One of the
best methods for those really hard-to-get-to place is based on laser 【S2】______
spectroscopy. Light from a laser pointing at the region of interest 【S3】______
is absorbed by molecules and some of it are re-emitted back 【S4】______
towards the source where it can be measured. The re-emitted light
is shifted in frequency (changed in wavelength) by amounts that
depend on the molecule and also the temperature and pressure of 【S5】______
the surrounding gas because of collisions among the molecules.
The single, sharp frequency from the laser is thus smeared out in
to a whole spectrum of frequency whose shape can be used to 【S6】______
determine the temperature provided so that the molecular
transitions and line shapes are known. Because it ’is the main 【S7】______
component of the air, it is convenient to use nitrogen since its
molecular properties are known from room temperature to 【S8】______
temperature of about 1,200 degree Celsius from experimental
measurements. Although this is a large range, it is far short of 【S9】______
what it is needed for some applications. 【S10】______
【S4】
选项
答案
fire→is
解析
根据上下文,主语some of it中的代词it应该指light。
转载请注明原文地址:https://kaotiyun.com/show/ulOK777K
0
大学英语六级
相关试题推荐
Attheverybeginning,SamWaltonbelievedthathewouldearnmuchmoneyevenifhesoldproductsatlowerpricesthanhisoppon
Peoplecouldeatmorecocoa-richproductssuchasdarkchocolatebutnotdrinkteaiftheywanttolowertheirbloodpressure,G
Peoplecouldeatmorecocoa-richproductssuchasdarkchocolatebutnotdrinkteaiftheywanttolowertheirbloodpressure,G
Peoplecouldeatmorecocoa-richproductssuchasdarkchocolatebutnotdrinkteaiftheywanttolowertheirbloodpressure,G
A、Usesofcoldseawater.B、Irrigatingdesertareas.C、Techniquesforpreservingtheenvironment.D、Techniquesofcultivatingpl
A、Jobless.B、Wrongideaabouttheworktheydo.C、Choosetheircareersundertheinfluenceofthesefalseimages.D、Voidcertain
Astudyofarthistorymightbeagoodwaytolearnmoreaboutaculturethanispossibletolearningenerallyhistoryclasses.
A、Otherlivingthingschangetheirenvironmentwhilemandoesn’t.B、Manaltershisenvironmentwhileheisadaptedtoit,butot
A、Spendingmoremoney.B、Complainingtothemanager.C、Fightingforthem.D、Waitingforasale.CWhatshouldwedoifwewantto
Noonehas_______________________(做出一个令人信服的解释)whydinosaursdiedout.
随机试题
级别是确定公务员工资的惟一依据的国家是
下列哪项不是正中神经损伤的临床表现
初产妇,24岁。妊娠39周,规律宫缩9小时入院,查:骼棘间径24cm,坐骨结节间径7.5cm,枕左前位,胎心140/min。肛查宫口开大4cm,S=0。2小时后产妇呼叫腹痛难忍,检查宫缩1分钟一次,持续40秒,宫缩时胎心116/min,子宫下段压痛明显
施工单位因为违反施工合同而支付违约金后,建设单位仍要求其继续履行合同,则施工单位应()。【2005年考试真题】
风险监管的优点有很多,采用以风险为本的监管无疑更是一种最具成本效益的选择,它代表着国际银行业监管发展的趋势和方向,其优点和作用主要表现在()。
(2004年卷四第60题)以下关于说明书的撰写要求的哪些说法是错误的?
根据柯尔伯格的有关儿童道德判断发展阶段的研究,朴素的快乐主义和工具定向阶段属于()。
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现~一定的规律性。
“苏格拉底法”/产婆术(2020年上海师大、2018年华东师大、2014/2018/2020年华中师大、2012年湖南师大、2011/2012/2013年东北师大、2011年北京师大、2011/2013/2015年浙江师大、2010/2012年南京师大、2
BSP强调向管理人员进行调查,因为管理部门对系统的要求是BSP方法的出发点,其目的是()。Ⅰ.核实已有资料Ⅱ.了解企业发展方向Ⅲ.确定存在的问题Ⅳ.寻找解决问题的方法
最新回复
(
0
)