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
外语
What is the tour for today mainly about?
What is the tour for today mainly about?
admin
2015-03-11
48
问题
What is the tour for today mainly about?
Many of the innovations in fire fighting that we will be seeing today were developed right here in America. As you can see from these photos, one of the earliest steam powered fire engines, the Joe Ross, was built in 1850 and operated right here in Cincinnati. Driven by four large horses, the ten-ton machine was steered by a single front wheel that was attached directly to the horse team. The steam motor on the Joe Ross was used to power the water pump that the big machine used to fight fires. Over here, we have an actual truck which was built in 1900 by the Waterous Fire Engine Works of Minneapolis. This was the very first fire engine to utilize a single steam motor for pulling the engine as well as pumping the water. As you may notice at the top of the truck, there is a circular platform that holds one end of a long ladder; the revolving platform operates almost like a record turntable in order to make it easier for ladder-operators to access buildings from difficult angles. The idea of the ladder turntable is credited to a San Francisco fireman by the name of Daniel Hayes. Hayes’ lifesaving invention, when combined with the relatively quick response time of the single engine, helped to bring fire fighting into the modern era.
选项
A、Urban fire fighting.
B、American fire fighting innovations.
C、The history of fire.
D、The Great San Francisco Fire fighting.
答案
B
解析
主旨题。文章开头便介绍说“我们今天将观看的是美国在消防方面的一些发明创新”,故B选项正确。
转载请注明原文地址:https://kaotiyun.com/show/EPHK777K
0
专业英语四级
相关试题推荐
Mostpeoplehavenoideaofthehardworkandworrythatgointothecollectingofthosefascinatingbirdsandanimalsthatthey
WriteonANSWERSHEETTWOanoteofabout50~60wordsbasedOnthefollowingsituation:YouarethechairmanofStudentUn
Asimplecomputerprogramthatteacheschildrentodistinguishbetweensoundscandramatically(1)______theirlisteningskills.
Whatisthemainideaofthispassage?
Theexaminationhasbeencancelled.You______allthatrevision,afterall.
WhichofthefollowingstatementsisINCORRECT?
Accordingtothepassage,intensenoisepollutionmayNOTcause______.
______astrongsuspicionagainstthecluesprovided,thecourtdidn’tannouncetheverdict.
ProfessorJamessuggestedthathisstudents______acompositionaboutairpollution.
Howmanykindsoftravelbooksarementionedinthepassage?
随机试题
心悸,善惊易恐,坐卧不安,少寐多梦,舌苔薄白,脉弦者,治疗宜首选
足三里穴的定位是
吸附TLC的固定相应采用
有关基本药物优先选择和合理使用制度说法错误的是
电子商务是()的一个完整的商务活动。
幼儿的生理和心理发展水平较低,家长为了让其顺利成长,可以包办他们的一切生活。
人的_____是人赖以发展的物质基础和前提,为人的发展提供了可能性。
下列关于介绍信的使用说法正确的是()。
中国坚定不移地走和平发展道路。我们立足于自身发展,不搞侵略扩张,不搞以邻为壑,更不会走“国强必霸”的传统大国崛起的老路,而是真诚希望与世界各国和平共处,共同发展。我们不追求自己的利益最大化,而将认真实行互利共赢的开放战略。我们将继续为发展中国家提供力所能及
一般来说,cache的功能(1)。某32位计算机的cache容量为16KB,cache块的大小为16B,若主存与cache的地址映射采用直接映像方式,则主存地址为1234E8F8(十六进制数)的单元装入的cache地址为(2)。在下列cache的替换算法中
最新回复
(
0
)