马斯洛先后提出了7种需要,从低到高排列为:生理需要、安全需要、归属与爱的需要、尊重的需要、求知的需要、审美的需要、()。
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A first magnitude star is().
A. 2.5 times as bright as a second magnitude star
B. 3 times as bright as a second magnitude star
C. 5 times as bright as a second magnitude star
D. 10 times as bright as a second magnitude star