国产成人福利在线_狠狠骚_久久久精品视频免费_56pao在线_日韩一区二区福利_国产综合久久

2023英語四級聽力練習(xí)慢速4.19

雕龍文庫 分享 時間: 收藏本文

2023英語四級聽力練習(xí)慢速4.19

  From Learning English, this is As It Is Saturday. Im Anna Matteo.

  Improvements in technology can save lives. Stronger buildings do not fall during storms and earthquakes. Warning systems let people know when tornados or tsunamis are coming. Air travel is safer because of changes in airplane technology.

  But even with all of these improvements, disasters, both natural and man-made, will happen. And when they do, finding victims quickly helps save lives.

  On the show today, we tell about the radar technology that is searching for the lost Malaysian Aircraft 370. But first, a report on a search-and-rescue tool that is helping emergency workers find victims and recover bodies.

  Heres June Simms.

  High Tech Rescue Tool

  When a building collapses, every minute is important for victims buried under the wreckage. That is why two American government agencies teamed up to develop a high-tech tool to find those who are trapped. The Department of Homeland Security and NASA, the National Aeronautics and Space Administration, took part in the project.

  Rescue crews have been testing this state-of-the-art radar tool called FINDER. The name is short for Finding Individuals for Disaster and Emergency Response.

  This radar device can recognize a persons smallest movements or even a heartbeat, even when the individual is unable to communicate.

  Earlier this year, Homeland Security and rescuers used FINDER to carry out more than 65 test searches in the American state of Virginia.

  They say the tests proved successful in recognizing a human heartbeat under nine meters of mixed concrete and other material. The device was also able to identify a heartbeat hidden behind six meters of solid concrete, and from a distance of up to 30 meters in open space.

  Jim Lux is with the Jet Propulsion Laboratory in California.

  FINDER works by sending a low-power microwave signal, and it illuminates the rubble pile, and some of the microwaves go in and reflect off the victim inside and come back out. So FINDER sees both the reflection from the rubble, which doesnt move, and a very tiny reflection from the victim, which does move, because when you breathe and when your heart beats, your skin moves a little bit and we can see that.

  Jim Lux says the device is small, easy to carry and easy to use.

  It goes out and collects 30-seconds worth of data, because that is how long you need to get the heartbeat and the breathing, and then it analyzes it and displays it for the user.

  FINDER could be used with other tools rescuers use, such as listening devices or search dogs. Matthew Tamillow is with Virginia Task Force 1. He says the new technology could help rescuers in deciding which buildings to search.

  This type of technology, including FINDER, could aid in the assistance of triaging a building to say, Okay, there is a strong probability that a live victim could be in here, and we need to devote our valuable human resources into searching it.

  Im June Simms.

  And Im Anna Matteo. You are listening to As It Is.

  Every airplane has a flight information recorder, often called a black box. This black box helps answer the question, What happened? when an airplane has technical problems or crashes.

  But what happens when you cannot find the plane? What do you do when a plane disappears as is the case with Malaysia flight 370?

  New technology is helping to find the wreckage of planes after the search for survivors ends and a search for answers begins.

  Malaysia Plane Pinger Locator

  Australian and U.S. navy officials say they may have heard more signals that may have come from the black box on the missing Malaysia Airlines plane. But they say they cannot confirm where the airplane is until its wreckage is seen in the Indian Ocean.

  The U.S. Navy has received the most helpful information so far in the month-long search. It has a device called a pinger locator. Pings are the sounds that black boxes make so that they can be found.

  A pinger locater identifies where the pings come from.

  An Australian naval ship is pulling the U.S. navys pinger locator in deep waters more than 1,500 kilometers northwest of Perth, Australia.

  Paul Nelson is with Phoenix International, the company that makes the pinger locators.

  You might hear that tiny little chirp and say, Did you hear something? And then we will listen more intently and try to fine-tune it.

  Fine-tuning it means turning the boat and changing position of the locator. The operation takes eight hours. Search time is limited. The energy source for the black box does not last forever. The battery power is guaranteed to last 30 days but can go longer. However, the sound will disappear at some point.

  Jim Gibson is also with Phoenix International ?. The advertised shelf life for the pinger when its in the water is 30 days. We have individuals that have been out on operations that have heard the pinger well beyond 45 days.

  Once suspected wreckage is identified, a robotic device is deployed to the area. The small device, called Remora, is controlled from the larger ship. It carries a camera that records video of the area. Remora also has a very strong mechanical arm. It picks up wreckage and puts it into a box. The box is then pulled to the surface.

  Remora helped in the recovery of Air France Flight 447 which crashed into the Atlantic Ocean in . The aircraft was lost for five days. Remora recovered the planes engines, computers, and black box.

  The process of finding wreckage in the ocean takes time and patience. Conditions are difficult. It is often difficult to see. The weather can cause problems too. And, the pressure is extreme in deep water.

  Mr. Nelson says finding a wrecked airplane in the ocean is like trying to a needle in a haystack, even with modern technology.

  Im Anna Matteo. Join us again tomorrow for another As It Is.

  

  From Learning English, this is As It Is Saturday. Im Anna Matteo.

  Improvements in technology can save lives. Stronger buildings do not fall during storms and earthquakes. Warning systems let people know when tornados or tsunamis are coming. Air travel is safer because of changes in airplane technology.

  But even with all of these improvements, disasters, both natural and man-made, will happen. And when they do, finding victims quickly helps save lives.

  On the show today, we tell about the radar technology that is searching for the lost Malaysian Aircraft 370. But first, a report on a search-and-rescue tool that is helping emergency workers find victims and recover bodies.

  Heres June Simms.

  High Tech Rescue Tool

  When a building collapses, every minute is important for victims buried under the wreckage. That is why two American government agencies teamed up to develop a high-tech tool to find those who are trapped. The Department of Homeland Security and NASA, the National Aeronautics and Space Administration, took part in the project.

  Rescue crews have been testing this state-of-the-art radar tool called FINDER. The name is short for Finding Individuals for Disaster and Emergency Response.

  This radar device can recognize a persons smallest movements or even a heartbeat, even when the individual is unable to communicate.

  Earlier this year, Homeland Security and rescuers used FINDER to carry out more than 65 test searches in the American state of Virginia.

  They say the tests proved successful in recognizing a human heartbeat under nine meters of mixed concrete and other material. The device was also able to identify a heartbeat hidden behind six meters of solid concrete, and from a distance of up to 30 meters in open space.

  Jim Lux is with the Jet Propulsion Laboratory in California.

  FINDER works by sending a low-power microwave signal, and it illuminates the rubble pile, and some of the microwaves go in and reflect off the victim inside and come back out. So FINDER sees both the reflection from the rubble, which doesnt move, and a very tiny reflection from the victim, which does move, because when you breathe and when your heart beats, your skin moves a little bit and we can see that.

  Jim Lux says the device is small, easy to carry and easy to use.

  It goes out and collects 30-seconds worth of data, because that is how long you need to get the heartbeat and the breathing, and then it analyzes it and displays it for the user.

  FINDER could be used with other tools rescuers use, such as listening devices or search dogs. Matthew Tamillow is with Virginia Task Force 1. He says the new technology could help rescuers in deciding which buildings to search.

  This type of technology, including FINDER, could aid in the assistance of triaging a building to say, Okay, there is a strong probability that a live victim could be in here, and we need to devote our valuable human resources into searching it.

  Im June Simms.

  And Im Anna Matteo. You are listening to As It Is.

  Every airplane has a flight information recorder, often called a black box. This black box helps answer the question, What happened? when an airplane has technical problems or crashes.

  But what happens when you cannot find the plane? What do you do when a plane disappears as is the case with Malaysia flight 370?

  New technology is helping to find the wreckage of planes after the search for survivors ends and a search for answers begins.

  Malaysia Plane Pinger Locator

  Australian and U.S. navy officials say they may have heard more signals that may have come from the black box on the missing Malaysia Airlines plane. But they say they cannot confirm where the airplane is until its wreckage is seen in the Indian Ocean.

  The U.S. Navy has received the most helpful information so far in the month-long search. It has a device called a pinger locator. Pings are the sounds that black boxes make so that they can be found.

  A pinger locater identifies where the pings come from.

  An Australian naval ship is pulling the U.S. navys pinger locator in deep waters more than 1,500 kilometers northwest of Perth, Australia.

  Paul Nelson is with Phoenix International, the company that makes the pinger locators.

  You might hear that tiny little chirp and say, Did you hear something? And then we will listen more intently and try to fine-tune it.

  Fine-tuning it means turning the boat and changing position of the locator. The operation takes eight hours. Search time is limited. The energy source for the black box does not last forever. The battery power is guaranteed to last 30 days but can go longer. However, the sound will disappear at some point.

  Jim Gibson is also with Phoenix International ?. The advertised shelf life for the pinger when its in the water is 30 days. We have individuals that have been out on operations that have heard the pinger well beyond 45 days.

  Once suspected wreckage is identified, a robotic device is deployed to the area. The small device, called Remora, is controlled from the larger ship. It carries a camera that records video of the area. Remora also has a very strong mechanical arm. It picks up wreckage and puts it into a box. The box is then pulled to the surface.

  Remora helped in the recovery of Air France Flight 447 which crashed into the Atlantic Ocean in . The aircraft was lost for five days. Remora recovered the planes engines, computers, and black box.

  The process of finding wreckage in the ocean takes time and patience. Conditions are difficult. It is often difficult to see. The weather can cause problems too. And, the pressure is extreme in deep water.

  Mr. Nelson says finding a wrecked airplane in the ocean is like trying to a needle in a haystack, even with modern technology.

  Im Anna Matteo. Join us again tomorrow for another As It Is.

  

周易 易經(jīng) 代理招生 二手車 網(wǎng)絡(luò)營銷 旅游攻略 非物質(zhì)文化遺產(chǎn) 查字典 精雕圖 戲曲下載 抖音代運營 易學(xué)網(wǎng) 互聯(lián)網(wǎng)資訊 成語 詩詞 工商注冊 抖音帶貨 云南旅游網(wǎng) 網(wǎng)絡(luò)游戲 代理記賬 短視頻運營 在線題庫 國學(xué)網(wǎng) 抖音運營 雕龍客 雕塑 奇石 散文 常用文書 河北生活網(wǎng) 好書推薦 游戲攻略 心理測試 石家莊人才網(wǎng) 考研真題 漢語知識 心理咨詢 手游安卓版下載 興趣愛好 網(wǎng)絡(luò)知識 十大品牌排行榜 商標交易 單機游戲下載 短視頻代運營 寶寶起名 范文網(wǎng) 電商設(shè)計 免費發(fā)布信息 服裝服飾 律師咨詢 搜救犬 Chat GPT中文版 經(jīng)典范文 優(yōu)質(zhì)范文 工作總結(jié) 二手車估價 實用范文 石家莊點痣 養(yǎng)花 名酒回收 石家莊代理記賬 女士發(fā)型 搜搜作文 鋼琴入門指法教程 詞典 讀后感 玄機派 企業(yè)服務(wù) 法律咨詢 chatGPT國內(nèi)版 chatGPT官網(wǎng) 勵志名言 文玩 語料庫 游戲推薦 男士發(fā)型 高考作文 PS修圖 兒童文學(xué) 工作計劃 舟舟培訓(xùn) IT教程 手機游戲推薦排行榜 暖通,電地暖, 女性健康 苗木供應(yīng) ps素材庫 短視頻培訓(xùn) 優(yōu)秀個人博客 包裝網(wǎng) 創(chuàng)業(yè)賺錢 養(yǎng)生 民間借貸律師 綠色軟件 安卓手機游戲 手機軟件下載 手機游戲下載 單機游戲大全 石家莊論壇 網(wǎng)賺 職業(yè)培訓(xùn) 資格考試 成語大全 英語培訓(xùn) 藝術(shù)培訓(xùn) 少兒培訓(xùn) 苗木網(wǎng) 雕塑網(wǎng) 好玩的手機游戲推薦 漢語詞典 中國機械網(wǎng) 美文欣賞 紅樓夢 道德經(jīng) 標準件 電地暖 鮮花 書包網(wǎng) 英語培訓(xùn)機構(gòu) 電商運營
主站蜘蛛池模板: 日韩在线免费视频 | 欧美精品在线一区二区三区 | 欧美精三区欧美精三区 | 精品亚洲一区二区三区四区五区 | 欧美成人h版在线观看 | 久久亚洲欧美日韩精品专区 | 亚洲一区二区在线 | 久久久一区二区三区 | 人人超碰免费 | 国产干干干 | 欧美一区不卡 | 欧美日韩不卡 | av伊人网| 成人在线精品 | 亚洲精彩视频在线 | 精品96久久久久久中文字幕无 | 国产偷久久9977| 日韩在线免费观看视频 | 亚洲色图二区 | 九色 在线 | 久青草视频在线 | 午夜午夜精品一区二区三区文 | 免费黄色在线观看 | 精品一区二区三区成人精品 | 99精品欧美一区二区三区综合在线 | 亚洲 欧美 日韩 丝袜 另类 | 欧美free性丝袜xxxxhd | 自拍亚洲| 亚洲综合社区 | 日本在线一区二区 | 毛片在线视频 | 国产99久久精品 | 成人av一级 | 91国内在线观看 | 国产免费黄色 | 日韩免费一区二区 | 欧美一区 | 成人免费看 | 日韩一区二区三区精品 | 热久久久久 | 久久久91视频|