首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
专升本
It used to take Redwood City, California police hours to locate gunfire. Now, they have a new tool that helps them find the gunf
It used to take Redwood City, California police hours to locate gunfire. Now, they have a new tool that helps them find the gunf
admin
2011-06-28
25
问题
It used to take Redwood City, California police hours to locate gunfire. Now, they have a new tool that helps them find the gunfire quickly. This new tool is called the ShotSpotter. The police began using the ShotSpotter in 1995. They wanted to cut down on gunfire in their city.
One ShotSpotter covers a square mile. Eight microphones are put on the roofs of buildings. These microphones pick up gunfire noise. It only takes seven seconds to report the gunfire to the police. Then a red dot on the police map shows where the action is.
The ShotSpotter really works well. It locates the gunfire within 20 to 40 feet plus or minus. Redwood City police are very happy with the ShotSpotter. They think it might have helped catch the D.C. sniper.
ShotSpotters cost a lot of money. One of them sells for $200,000. Despite the cost, ShotSpotters can be a big help in fighting crime.
Eight microphones placed on rooftops ______ .
选项
A、talk to police
B、warn the public
C、listen for gunfire
D、play rap music
答案
C
解析
参见第二段:麦克风放在房顶上是为了监听到打枪的声音。
转载请注明原文地址:https://kaotiyun.com/show/6PlC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Forthispartyouareallowed30minutestowriteacompositiononthetopic:MakeOurCitiesGreener.Youshouldwritenoless
Dressingfashionablywasveryimportantinfourteenth-centurySpain.Thiswasespeciallytrueforanymanwhoconsideredhimself
Onetypeofpersonthatiscommonineverycountryistheonewho______.Bothofthesetypesofpeopleareusually______thei
Americansenjoyfastfoodmainlybecause______.Itcanbeinferredthatchildren______.
Somepeoplearguethatthepressureoninternationalsportsmenandsportswomenkillstheessenceofsport--thepursuitofperson
Manyuniversitycoursesarenotreally______totheneedsofstudentsortheirfutureemployers.
Severalbankshavejoinedthe______inordertogivebetterservicetotheircustomers.
DuringtheChristmasshoppingrushinLondon,theinterestingstorywasreportedofatramp(流浪者)who,apparentlythoughnofaul
Hishandwritingisverybad,soIhavemuchtrouble______hisletter.
随机试题
干燥速率是指()。
在一填料塔中用净油来吸收混合气体中的苯,已知混合气体的总量为1000m3/h,其中苯的体积分数为4%,操作压力为101.3kPa,温度为293K,吸收剂的用量为103kmol/h,要求吸收率为80%,塔底苯溶液的浓度为()kmol/kmol。
下列各项中不是半月板损伤急性期表现的是
病原体的排出门户不包括
可使新生儿黄疸加重的因素除外
资产负债表中的“固定资产”项目,应根据“固定资产”账户余额减去“累计折旧”账户余额后的金额填列。()
甲产品月末在产品只计算原材料费用。该产品月初在产品原材料费用为7200元;本月发生的原材料费用4200元。原材料均在生产开始时一次投入。本月完工产品200件,月末在产品100件。据此计算的甲产品本月月末在产品原材料费用是()元。
Since1989,DaveThomas,whodiedatage69,wasoneofthemostrecognizablefacesonTV.Heappearedinmorethan800commerci
我国公民宗教信仰自由政策的实质是()。
VisualFoxPro中不允许在主关键字字段中有重复值或【】。
最新回复
(
0
)