题目内容
Now satellite-based communication only is a dream by a few inspired individuals.
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In l945, Arthur C.Clarke had developed a worldwide satellite system.
Today’s communications satellites, for the most part, circling the earth at a rapid rate of speed.
The satellite is stationary in the sky in relation to an observer on the earth.
高血压患者缺乏血压监测的知识,下列护理诊断陈述正确的是
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