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
2024-06-08
16
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] 【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://tihaiku.com/zcyy/3625365.html
相关试题推荐
While______(邮政和电信依然为国家控制)andthusreadilymeasured,morethanlmsmalltrucki
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
We’veallusedthermometerstomeasuretemperaturebutsometimesweneedto
[originaltext]Unlessmeasuresaretakenatonce,thereisagoodchancetha
[originaltext]UnlikeBoas,whohadonlysuggestedlanguageasameasureof
随机试题
PASSAGEFOUR[br]Whatisthewriter’stoneinthispassage?Approving.文章在第1段讲到了阅
Issuesconcerninghumanlearningareamongthecriticaltopicsineducation
[originaltext]W:EnglishLanguageCenter.MayIhelpyou?M:Yes.I’mcallingt
A.保和丸 B.二陈平胃汤 C.泻心汤合连朴饮 D.补中益气汤 E.益胃
根据迁移发生的方向,迁移又可分为( )。A.正迁移和负迁移 B.积极迁移和消
【教学过程】 (一)开始部分 1.课堂常规:体委整队,报告人数,师生问好,教师简要介绍教学内容,检查服装,安排见习生。 组织教学:四列横队。 要
连续监测法测定ALT所用基质通常是A.草酰乙酸-谷氨酸B.丙氨酸-α酮戊二酸C.
A.供氧浓度 B.潮气量 C.每分钟通气量 D.呼吸压力 E.呼吸频率呼
恶性贫血的病因是A.出血过多 B.萎缩性胃炎 C.维生素B缺乏 D.抗壁细
(2018年真题)某企业发行优先股股票,票面额正常市价计算为500万元,筹资费费
最新回复
(
0
)