A.How important traffic lights are.B.Which colour has the longest wavelength.C.What red, yellow and green can be used for.D.Why traffic lights are red, yellow and green. 相关知识点: 试题来源: 解析 26.B 27.C 28.B 29.C 30.D 26. B 最早的交通信号灯用于铁路,因此答案为B。 27. C ...
百度试题 结果1 题目What were traffic signals for before traffic lights for cars? A. Trains B. Boats. C. Planes D. Bicycles 相关知识点: 试题来源: 解析 A. Trains B. Boats. C. Planes D. Bicycles 反馈 收藏
1.If you will be cycling, you will need to know what these traffic signs and signals mean.”可知,文章主要是写给骑自行车的人的,故选C。2.If there is a bike lane, you are required to use it.”可知,如果有自行车道,骑自行车的人必须走自行车道,故选A。3.This is a picture of a red hand...
If you will be cycling, you will need to know what these traffic signs and signals mean.A sign like this one means that there is a bike lane. If there is a bike lane, you are required to use it. If there is not a bike lane, you should ride with traffic a
If you are cycling in foreign countries, you will need to know what these traffic signs and signals mean.1A sign like this one means that there is a bike lane. If there is such a sign.you are required to use the bike lane.If there is not such a sign, you
the main router, meaning WiFi signals have just a single ‘hop’ between the node and the router. The second benefit is that if a node should go offline for any reason then the other nodes are able to keep the network operational. In order for star topology to work, the distance ...
The first traffic lights in the United States were installed because of an increase in traveller on the road in the 1920s. Worried about accidents, towns and cities installed traffic towers to help the flow of cars. Officers manned the towers, using whistles and red, green and yellow lights...
LIGHT FINGERED; 114 Traffic Signals Are Stolen in Rangers-Mad Town. and Guess What ..98 of Them Are GreenByline: By Elaine RobsonDaily Record (Glasgow, Scotland)
When a driver doesn't follow the traffic signals at a crossroads, what is a likely danger? A. 被也平标时听更被也平标时听更They will find it easier to park their car被也平标时听更被也平标时听更 B. 度效一四照史身大较最响任形今今确共度效一四照史身大较最响任形今今确共They ...
C. Yes. I surf on the internet. - Hey, what are you doing in that room? -___ A. Nothing in particular. B. Fine. Thank you. C. I am preparing for the test next week. - Oh, amazing! Could you give me more information about it? - ___ A. Sure. You ...