Driver Alert is based on a computerized wristband(表带). The device,worn by drivers or pilots,gives out a sound about every four minutes during the journey. After each sound the driver must respond by squeezing the steering wheel(方向盘). A sensor in the wristband detects this pressing action and measures the time between the sound and the driver’s response. Tiredness is directly related to a driver’s response time. Usually,a watchful driver would take about 400 milliseconds to respond,but once that falls to more than 500 milliseconds,it suggests that the driver is getting sleepy.
In such cases the device gives out more regular and louder sounds,showing that the driver should open a window or stop for a rest. If the driver’s response continues to slow down,the sounds become more frequent until a nonstop alarm warns that the driver must stop as soon as possible.
The device has been delivered to the department’s laboratories for testing. If these tests, scheduled for six months’ time,are successful,the markets will bring the product to market within about a year.
Title: __29__
Ⅰ.__30__:
·To reduce __31__ accidents.
Ⅱ.Working principle:
· (the device) based on __32__
· (the device) giving out a sound __33__
· (the driver) __34__ by squeezing the steering wheel
【2017届高考英语一轮复习课时作业8:Unit 2《Language》(牛津译林版必修3湖南专用)】相关文章:
★ (安徽专用)2014届高考英语一轮复习方案 作业手册(12)模块4 《Unit 12 Culture Shock》(含解析) 北师大版必修1
★ 2014届高考英语一轮复习课时作业(三十七)选修7Module 1《Basketball》(外研版)
★ 四川省2016届高考英语一轮复习课时作业(28) Module 4 Carnival 外研版必修5
★ 2014届高考英语一轮复习课时作业(四十七)选修8Module 5《The Conquest of the Universe》(外研版)
★ 2014届高考英语一轮复习课时作业(二十九)必修5Module 5《The Great Sports Personality》(外研版)
★ 2014届高考英语一轮复习课时作业(七)必修2Module 1《Our Body and Healthy Habits》(外研版)
★ (全国通用)2014届高考英语一轮单元复习 限时强化训练十二
★ 2017届高考英语二轮复习大题冲关秘籍完形填空之记叙文:命题趋势(含解析)
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21