更多"2. Finding Yourself without GPS As"的相关试题:
[单项选择]2. Finding Yourself without GPS
As more mobile phones tap into the Internet, people increasingly turn to them for location-centric services like getting directions and finding nearby restaurants. While Global Positioning System (GPS) technology provides excellent accuracy, only a fraction of phones have this capability. What’s more, GPS coverage is spotty in dense urban environments, and in—phone receivers can be slow and drain a phone’s battery.
To sidestep this problem, last week Google added a new feature, called My Location, to its Web-based mapping service. My Location collects information from the nearest cell-phone tower to estimate a person’s location within a distance of about 1,000 meters. This resolution is obviously not sufficient for driving directions, but it can be fine for searching for a restaurant or a store. "A common use of Google Maps is to search nearby," says Steve Lee, product manager for Google Maps, who likened the approach to searching for something
A. Right
B. Wrong
C. Not mentioned
[填空题]Rowe believes that being addicted to our mobile phones won’t do us good in ______.
[简答题]Nowadays, more and more parents buy mobile phones for their children in primary schools for various reasons. It is true that parents and children could contact easily with each other by using mobile phones, but this double-edged sword also brings many problems for themselves as well us for the society. In your opinion, is it beneficial or not
Write on ANSWER SHEET TWO a composition of about 200 words on the following topic:
SHOULD PRIMARY STUDENTS USE MOBILE PHONES
You are to write in three parts.
In the first part, state specifically what your opinion is.
In the second part, support your opinion with appropriate details.
In the last part, bring what you have written to a natural conclusion or a summary.
Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks
[填空题]The higher a substance’s pH, the more acidic it is.
[多项选择]Causes of development of cars:
· More mobile
· Downtown less crowded
· Not force to rely on public transport
· Comfort
· Changing way of life
· Affecting social relationships
· Opening up a new world
[单项选择]调节pH
A. 肾上腺素
B. 维生素C
C. 青霉素G钾盐
D. 易发生氧化反应
E. 硝普钠
[填空题]To read without reflecting<.u> is like eating without digesting.
[单项选择]校正pH计时需选用pH接近的两种标准缓冲液,两者的pH值相差是
A. R
B. T
C. F、
D. d(hkl)
E. θ
[单项选择]pH 2以下或pH 8以上时水解加速
A. 氯霉素
B. 吗啡
C. 维生素C
D. 肾上腺素
E. 氨苄西林