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
57
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
xandyareintegerssuchthat0<y<x.H=100x+10x+4G=100y+10y+2M=(H−G)(H+
A.serveB.sponsoredC.profitsD.principles
Thereisneveragoodtimetohaveaheartattack,butthewisepersonaffli
"恒重"指供试品的重量连续两次干燥或炽灼后的重量差异小于A.0.1mg B.0
A.肺与肝 B.肺与心 C.脾与肾 D.心与脾 E.肺与脾与气机调节关系
以高价买进的战略若要成功,必须具备的条件不包括()。A.必须是具备良好展望的
某人贷款20000元,日利率万分之二,如银行按单利计息,每年应还利息( )元。
在众多风险指标中,有利于降低未来发生损失的可能性的风险指标是()。A.事后风险
使用电磁操动机构的断路器进行合闸操作时,应注意观察()回路所接直流电流表的变化情
马克思主义哲学的直接理论来源是( )。A.黑格尔的辩证法 B.康德的经验
最新回复
(
0
)