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The Windows operating-system itself features a amount of features that permit locking down and protecting a PC such these settings are scattered all over the main system (e.g. inside Windows registry, in configuration files and several other places). Preparing a PC for the specialized use case could be very challenging and time-consuming.
Spacecraft flew hundreds of thousands to hundreds of millions of kilometers from the earth, injecting speed when the size and direction of a slight error, arrived at target planets will appear large deviation error, for example, when Mars probe injecting speed 1 m/s speed (about one over ten thousand), arrived at Mars, about 100000 km distance deviation. Therefore, precise control and navigation must be carried out during the long flight. Flying to the moon is usually controlled by the orbital control system of the ground and space probe (see orbit control). Interplanetary flight distances, radio signal transmission time is long, the real-time remote control, can't so planets and interplanetary spacecraft orbit control system shall have the ability of autonomous navigation (see interstellar travel navigation and control). The United States, for example, "pirates" spacecraft in space flight of more than eight hundred million km, for 11 months of 2000 times of autonomous orbit adjustment, the final surface to achieve a soft landing on Mars, placement accuracy up to 50 km. In addition, in order to ensure the accuracy of the orbit control engine, the communication antenna is always aimed at the earth, and other systems work normally, and the detector has the autonomous attitude control ability
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With the development of modern information technology and the introduction of new curriculum reform, English teaching introduces modern information technology such as multimedia and Internet. At present, more and more English teachers begin to use modern information technology to the set of features such as vividness, objective, comprehensive and practical for a teaching method to assist English teaching, for students to create a new, diversified, the original English language learning environment, so that the students as much as possible from different channels, in a different way of learning and using English, arouse students' interest in learning, mobilize the enthusiasm and initiative of learning, to fully embody the characteristics of the English teaching, also for improving the English classroom teaching, improve teaching efficiency there is extremely significant. Therefore, the application of modern information technology is the need of curriculum reform and conforms to the cognitive law. In the course of high school English teaching, the author tries to use modern information technology to teach English, and has achieved certain results
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