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Every day the hospital comes and goes, the child is born here, the old man leaves here, the nurse, silent guardian of life. Some people will say that the heart will be hardened and numb from disease and pain every day. I can't do it. Maybe I'm too emotional. I'll try my best to do my job. The nurse this profession, the physical labor hard, the work tense, the rescue time to fight, the frustration of the people after the death makes each class come down to fatigue. For a woman, two night shifts and a heavy workload can accelerate aging. Holiday can't take care of children and families, social prejudice also let the nurse is hard to get respect, a lot of time to experience less than professional pride, often suppress quickly mad, but after wearing a nurse, must overcome his own emotions, keep calm of mind, serious three seven pairs, observe the operation procedures, implement the principle of disinfection. The specialized course teacher ceaseless emphasizes the careful sudoku, is the person's life, at any time must press the work flow, meticulously completes the various treatment.
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
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