首页
登录
职称英语
The wearable antennas may have potential application in many areas. According to
The wearable antennas may have potential application in many areas. According to
游客
2023-12-29
44
管理
问题
The wearable antennas may have potential application in many areas. According to the speaker, which of the following is NOT one of them? [br]
Humans may become walking antennas for remote monitoring and mobile communications — with the help of a recent research to produce antennas integrated into clothing.
Still under development, the wearable antennas have potential application in biomedical monitoring, sports analysis, military and emergency communications.
The antennas can be incorporated into clothing using computerized embroidery into conductive fabric. A range of different shaped and sized antennas can be produced using altered patterns in the embroidery.
Wearable electronic systems for a range of communications applications have grown exponentially over the last few years. But the problem is these devices need very efficient antennas to communicate with the data receiver and to power the sensors being used — especially with radio frequency identification (RFTD)systems where the radiowave has to power the whole system.
Another issue is that the human body does not make a good environment for our antenna. We are a container of saltwater from an electromagnetic point of view; we absorb and change the characteristic of the signal, rather than transmitting it efficiently.
The solution being developed is a T-shirt made of conductive metallised fabric which is low-cost, flexible and lightweight. It doesn’t deteriorate easily and is washable, with the antenna embroidered onto the textile.
The difficulty of incorporating the electronics has been overcome with using snap-on buttons which form a connection between the textile antenna and the sensor device. These can easily be removed for washing.
The electronics can’t be directly integrated into the T-shirt because they would be uncomfortable to wear and aren’t water-proof. A recent research finding has shown that these readily available snap-on buttons used commonly on clothing make very reliable connections between the antenna and the electronics.
选项
A、Because the human body is not efficient enough to power the whole electronic system.
B、Because the human body is a container of saltwater, which can not transmit the signal efficiently.
C、Because the human body can not absorb and change the characteristic of the signal efficiently.
D、Because the human body feels uncomfortable to wear antennas.
答案
B
解析
根据原文“We are a container of saltwater from an electromagnetic point of view:we absorb and change the characteristic of the signal,rather than transmitting it efficiently.”,比较选项,可以确定答案是B。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3314368.html
相关试题推荐
Whichofthefollowingstatementsistrueaccordingtowhatyouhaveheard?[br]
Whichofthefollowingstatementsistrueaccordingtowhatyouhaveheard?[br]
Whichofthefollowingstatementsistrueaccordingtowhatyouhaveheard?[br]
Whichofthefollowingstatementsistrueaccordingtowhatyouhaveheard?[br]
Whichofthefollowingstatementsistrueaccordingtowhatyouhaveheard?[br]
Whichofthefollowingstatementsistrueaccordingtowhatyouhaveheard?[ori
Whichofthefollowingistrueaccordingtothespeaker?[br][originaltext]Joe
Whichofthefollowingistrueaccordingtothespeaker?[br][originaltext]Joe
Accordingtothespeaker,whatchangeswilltakeplaceaboutpersonalcomputers?
Accordingtothespeaker,whatchangeswilltakeplaceaboutpersonalcomputers?
随机试题
[originaltext]W:Idon’tknowwhy.IgotthissuddeninterestinEnglish.M:W
ChicagoPublicSchoolsofficialsaregivingthepublicanearlylookatthe
Itisimportanttorealizethatthesametechnologythathelpsusmayalsobring
Anewscholarlystudydocumentingthepoorhealthofsouthernmilitaryre
某软件项目的活动图如下图所示,其中顶点表示项目里程碑,连接顶点的边表示包含的活动
标志板自然暴露试验要点有()。A.试样尺寸100mm×200mm B.试样尺
2013年2月27日,国债期TF1403合约价格为92.640元,其中可交割国债
根据《禁毒法》,下列关于戒毒措施的说法,正确的有()。A:吸毒人员可以自行到具有
(2018年真题)下列关于个人生命周期各阶段理财活动特征的表述中,正确的是(
以下对班级授课制的优点描述不正确的是()。A.有利于提高教学效率 B.有利于
最新回复
(
0
)