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潮湿场所(如卫生间)，应采用密闭型或保护型的带保护线触头的插座，其安装高度不低于______m。
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What might driving on an automated highway be like The answer depends on what kind of system is ultimately adopted. Two distinct types are on the drawing board. The first is a special-purpose lane system, in which certain lanes are reserved for automated vehicles. The second is a mixed traffic system： fully automated vehicles would share the road with partially automated or manually driven cars. A special-purpose lane system would require more extensive physical modifications to existing highways, but it promises the greatest gains in freeway (高速公路) capacity. Under either scheme, the driver would specify the desired destination, furnishing this information to a computer in the car at the beginning of the trip or perhaps just before reaching the automated highway. If a mixed traffic system was in place, automated driving could begin whenever the driver was on suitably equipped roads. If special-purpose lanes were available, the car could enter them and join existing traffic in two different ways. One method would use is a special onramp (人口引道). As the driver approached the point of entry for the highway, devices installed on the roadside would electronically check the vehicle to determine its destination and to ascertain that it had the proper automation equipment in good working order. Assuming it passed such tests, the driver would then be guided through a gate and toward an automated lane. In this case, the transition from manual to automated control would take place on the entrance ramp. An alternative technique could employ conventional lanes, which would be shared by automated and regular vehicles. The driver would steer onto the highway and move in normal fashion to a "transition" lane. The vehicle would then shift under computer control onto a lane reserved for automated traffic. (The limitation of these lanes to automated traffic would, presumably, be well respected, because all trespassers (非法进入者) could be swiftly identified by authorities. ) Either approach to joining, a lane of automated traffic would harmonize the movement of newly entering vehicles with those already traveling. Automatic control here should allow for smooth merging, without the usual uncertainties and potential for accidents. And once a vehicle had settled into automated travel, the drive would be free to release the wheel, open the morning paper or just relax. (392 words) We learn from the first paragraph that two systems of automated highways
在下列单位中，电功率的单位是______。
Tina, a 10-lb 2-oz baby, was born into the Rodriguez home. The parents were delighted to have her, and she was given much love and attention. She seemed to grow up very normally, but did learn to talk a bit later than her two older siblings did. One day when she was about 3 years old, she fell off a swing and hurt her head, and had to have a few stitches to close a small wound. Several times after this the parents noticed that she would forget little things. It did not bother them until she enrolled in school, when she was 5 years and 10 months of age. At first she was anxious to go to school, but soon things began to change. She complained of being sick, and very often at school she had to use the restroom. The teacher complained that the child spent much of her time just gazing. She liked to talk to her friends, and often got into trouble with the teacher because she would not get her work done. Most times she completed no more than half an assignment. Her parents noted that she seemed to have lost her cheerfulness at home, and she often came home grumpy and complained that no one wanted to play with her. The longer she stayed in school, the worse her behavior became, and to top it all, in early spring the teacher concluded that Tina was not learning anything and was going to have to repeat the first grade. None of the following statements is true EXCEPT______.
Making Light of SleepAll we have a clock located inside our brains. Similar to your bedside alarm clock, your internal clock runs on a 24-hour cycle. This cycle, called a circadian rhythm, helps control when you wake, when you eat and when you steep.Somewhere around puberty, something happens in the timing of the biological clock. The clock pushes forward, so adolescents and teenagers are unable to fall asleep as early as they used to. When your mother tells you it"s time for bed, your body may be pushing you to stay up for several hours more. And the light coming from your computer screen or TV could be pushing you to stay up even later.This shift is natural for teenagers. But staying up very late and sleeping late can get your body"s clock out of sync with the cycle of light and dark. It can also make it hard to get out of bed in the morning and may bring other problems, too. Teenagers are put in a kind of a gray cloud when they don"t get enough sleep, says Mary Carskadon, a sleep researcher at Brown University in Providence, RI. It affects their mood and their ability to think and learn.But just like your alarm clock, your internal clock can be reset. In fact, it automatically resets itself every day. How By using the light it gets through your eyes.Scientists have known for a long time that the light of day and the dark of night play important roles in setting our internal clocks. For years, researchers thought that the signals that synchronize the body"s clock were handled through the same pathways that we use to see.But recent discoveries show that the human eye has two separate light-sensing systems. One system allows us to see. The second system tells our body whether it"s day or night. In the third paragraph the author wants to tell the reader that ______.
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