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The Volkswagen Beetle is strong competitor of Mercedes Smart. It has a cute exterior design, with nice, curved lines, even though the interior features a multi-functional sport steering wheel, making the car all to easy to control, plus a comfortable back-seat with plenty of legroom, uncharacteristic for such vehicles. Its fuel economy is a little worse compared to the Smart, with 22 mpg/city and 31 mpg/highway, nevertheless the great security features and excellent design must be reason enough to draw young drivers.
Space probe according to the detection of object is divided into lunar probe, probe and interplanetary spacecraft, small body such as a space probe to leave the speed of the earth must be large enough to overcome or get rid of the earth's gravity, realize the deep space flight. The probe orbits the heliocentric elliptical orbit (double-cut orbit) that is tangent to the earth's orbit and the planet's orbit, and may meet the target planet; Increase speed to change the orbit, flew to target the planet can shorten the time in order to ensure the detector fly the double track to the planetary orbits and tangent with the target when the target planets also run to it, must be chosen in the earth and the target planet at a particular moment of relative position detector. Detector can fly around the star, the use of planetary gravitational fields accelerate continuous multiple planets orbit the significant characteristic of space probe is, flying in space for long time, the ground cannot real-time remote control, so must have the ability of autonomous navigation; To fly outside the solar system, away from the sun, solar arrays, and nuclear energy systems; It is necessary to adopt special protective structure to withstand very severe space environment. Landing or walking on the surface of the moon or planet requires some special form of structure
In their day, wooden bodied station wagons were work horses. Considered unattractive and strictly utilitarian, we were holding produced in low numbers. Then after having a half century of production, these folks were gone, discontinued, largely because these were so desperately to produce and gaze after. Yet today, they can sell for higher than a house and therefore are considered classic beauties.
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