首页
登录
职称英语
We’ve all used thermometers to measure temperature butsometimes we need to
We’ve all used thermometers to measure temperature butsometimes we need to
游客
2023-09-13
71
管理
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】______ [br] 【S10】
选项
答案
it →/
解析
what在宾语从句中作主语,it是多余的。
转载请注明原文地址:https://tihaiku.com/zcyy/3009105.html
相关试题推荐
[originaltext]Ateamofscientistsrecentlybeganaprojecttomeasurethe
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
[originaltext]Unlessmeasuresaretakenatonce,thereisagoodchancetha
[originaltext]UnlikeBoas,whohadonlysuggestedlanguageasameasureof
随机试题
Thestreams,oftenpettyandinsignificantduringdryweather,becomeraging___
[originaltext]Today,Iamgoingtotalktoyousomethingaboutadvice.Advic
某运维团队在设定人员绩效指标考核时,设定了如下指标:要增强客户服务意识,热线服务
下列哪项不是共同性斜视的特点( )A.渐进发病 B.无复视 C.眼球运动无异
基金管理人、基金托管人、基金销售机构及其他私募服务机构及其从业人员违反法律法规和
下列选项不属于投资者权益保护重要手段的是( )。A.良好的投资者教育 B.健
不要因为我们曾经跌倒,就自叹自怜,到头来只会使充满希望的生命之花凋谢枯萎;不要因
在“秋天的树”美术活动中,教师不适宜的做法是()。A.让幼儿按照教师的范画绘画
戴全口义齿后出现的问题及处理
我国实行投资项目资本金制度的主要目的是()A:建立投资项目监管长效机制 B:建
最新回复
(
0
)