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The two - line interlocking device has a good range and good function. When it needs to drive in a continuous reverse direction, the dispatch order can be issued at one time.
However, science and technology are two different social cultures, and the differences between them are obvious. The basic task of science is to know the world and find it, thus increasing the intellectual wealth of mankind. The basic task of technology is to discover the world and invent it to create the material wealth of mankind and enrich the spiritual and cultural life of human society. Science answers questions about "what" and "why"; The technology answers the question "what to do" and "how to do". Therefore, the results of science and technology are different in form. Scientific achievements are generally expressed as concepts, laws, papers and other forms. The technical results are usually in the form of process flow, design drawing, operation method and so on. Scientific products are generally not commercial and technological achievements can be commoditized. Modern technology has a strong utilitarian and commercial color.
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This kind of jobs in security field however won't include working on offenses for example automobile traffic violations and accidents. It is the job of the security guard to simply protect the person or prevent any damage or destruction with the assigned property. Peace officers are widely-used to protect all property and individuals and also to enforce laws.
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