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据《素问·痿论》所述,具有“主束骨而利机关”作用的是( )
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Choose the correct word or phrase to match the following definitions.rub shoulders with; have a lump in one's throat; spare; slip; cataclysm;agitated; reverie; incessant; rear; heave;5. adj. disturbed, upset and troubled6. n. (state of) being absorbed in dreamlike contemplation; dreamy thinking (esp. of agreeable things)7. n. a violent and sudden upheaval, disaster8. v. not affect, refrain from hurting, harming or destroying (sb. /sth.), show mercy to9. a feeling of pressure in one's throat (cause by repressed emotion as love, sadness, etc. ) --- phrase10. (infml) meet and mix with (people) ---phrase
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模拟电子技术基础课程的突出特点是（）。
下列软件中，可以进行PCB（印制电路板）设计的是（）。
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