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熔化热熔型改性沥青胶结料时，宜采用专用的导热油炉加热，加热温度不应高于200。C，使用温度不应低于（）℃。
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Wide World of Robots
Engineers who build and program robots have fascinating jobs. These researchers tinker (修补) with machines in the lab and write computer software to control these devices. "They&39;re the best toys out there," says Howle Choset at Carnegie Mellon University in Pittsburgh. Choset is a roboticist, a person who designs, builds or programs robots.＜br＞
When Choset was a kid, he was interested in anything that moved--cars, trains, animals. He put motors on Tinkertoy cars to make them move. Later, in high school, he built mobile robots similar to small cars.＜br＞
Hoping to continue working on robots, he studied computer science in college. But when he got to graduate school at the Califomia Institute of Technology in Pasadena, Choset&39;s labmates were working on something even cooler than remotely controlled cars: robotic snakes. Some robots can move only forward, backward, left and right. But snakes can twist (扭曲 ) in many directions and travel over a lot of different types of terrain (地形) . "Snakes are far more interesting than the cars," Choset concluded.＜br＞
After he started working at Carnegie Mellon, Choset and his colleagues there bagan developing their own snake robots. Choset&39;s team programmed robots to perform. the same movements as real snakes, such as sliding and inching forward. The robots also moved in ways that snakes usually don&39;t, such as rolling.＜br＞
Choset&39;s snake robots could crawl (爬行) through the grass, swim in a pond and even climb a flagpole.＜br＞
But Choset wondered if his snakes might be useful for medicine as well. For some heart surgeries, the doctor has to open a patient&39;s chest, cutting through the breastbone. Recovering from these surgeries can be very painful. What if the doctor could perform. the operation by instead making a small hole in the body and sending in a thin robotic snake？＜br＞
Choset teamed up with Marco Zenati, a heart surgeon now at Harvard Medical School, to investigate the idea. Zenati practiced using the robot on a plastic model of the chest and they tested the robot in pigs.＜br＞
A company called Medrobotics in Boston is now adapting the technology to surgeries on people.＜br＞
Even after 15 years of working with his team&39;s creations, "I still don&39;t get bored of watching the motion of my robots," Choset says.
Choset began to build robots in high school. 查看材料
The planet that could support life might be a little bit smaller than Earth.
下列外加剂中，不属于改善混凝土拌和物流变性能的外加剂是（）。
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Almost Human？
Scientists are racing to build the world&39;s first thinking robot. This is not science fiction: some say they will have made it by the year 2020. Carol Packer reports.＜br＞
Machines that walk, speak and feel are no longer science fiction. Kismet is the name of an android (机器人) which scientists have built at the Massachusetts Institute of Technology (MIT).＜br＞
Kismet is different from the traditional robot because it can show human emotions. Its eyes, ears and lips move to show when it feels happy, sad or bored. Kismet is one of the first of a new generation of androids--robots that look like human beings--which can imitate human feelings.＜br＞
Cog, another android invented by the MIT, imitates the action of a mother. However, scientists admit that so far Cog has the mental ability of a two-year-old.＜br＞
The optimists (乐观主义者 ) say that by the year 2020 we will have created humanoids (机器人)with brains similar to those of all adult human being. These robots will be designed to look like people to make them more attractive and easier to sell to the public. What kind of jobs will they do？ In the future, robots like Robonaut, a humanoid invented by NASA, will be doing dangerous jobs, like repairing space stations. They will also be doing more and more of the household work for us. In Japan,scientists are designing androids that will entertain us by dancing and playing the piano.＜br＞
Some people worry about what the future holds: will robots become monsters (怪物) ？ Will people themselves become increasingly like robots？ Experts predict that more and more people will be wearing micro-computers, connected to the Internet, in the future. People will have micro-chips in various parts of their body, which will connect them to a wide variety of gadgets (小装置).＜br＞
Perhaps we should not exaggerate (夸大) the importance of technology, but one wonders whether,in years to come, we will still be falling in love, and whether we will still feel pain. Who knows？＜
Kismet is different from traditional robots because __________. 查看材料
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