题目内容
（请给出正确答案）
What is the purpose of the limit switch on gravity davits？
A.To cut off the power when the davits hit the track safety stops
B.To stop the davits from going too fast
C.To cut off the power when the davits are about 12 inches or more from the track safety stops
D.None of the above
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“What is the purpose of the limit switch on gravity davits？A.To cut off the power when the”相关的问题
The sensors will work through the central home computer, and they will do much more than just turn the fires and lights on and off for you. They will detect faulty electrical appliances, isolate them so that they cannot harm anyone, and then warn you that they need repair. They will detect fire and if you are out of the house, the computer will call the firemen. It will also call the police should the sensors detect an intruder. You will open the door using your personal card—the one you use for shopping—maybe using a number known only to you.
The author intends to tell the readers that in year 2040 _____.
A. they will live without lights and heaters
B. they will use much more lights and heaters
C. lights and heaters will be on and off automatically
D. there will be no switches of lights and heaters
According to the passage, which of the following statements is true?
A. People often forget to turn off the lights and heaters.
B. People will have a servant to work for them in 2040.
C. People are afraid of year 2040.
D. People will save much trouble with the help of advanced technology.
According to the author, in 2040, new technology _____ .
A. will turn everything into sensors
B. will free us from the keys we use today
C. will make the locks out of date
D. will eliminate crimes
Thanks to computers, in 2040 people ____ .
A. will replace TV with computers
B. will have much fewer fire accidents
C. will be controlled by computers
D. will have more fun at home
The best title for the passage might be _____ .
A. Life in Year 2040
B. Sensors and Computers
C. The Development of Science and Technology
D. Lights and Heaters in the Year 2040
A、A. big fires
B、B. violent animals
C、C. frequent earthquakes
D、D. crazy floods
A、A. trees
B、B. pillars
C、C. animals
D、D. mountains
警告：系统检测到您的账号存在安全风险
为了保护您的账号安全，请在“简答题”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
