test_copy1012 (id: 0b7bbc175)

[判断题]
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a vector has a direction.kb8jm8*, xpv 3hjl6so.hibm6s/ozu+ kp3u9k

参考答案: 


本题详细解析:
This is true because gi59eij l/di0r t (d6ua vector is a quantity with not only a magnitude but also a direction. So the/dtd(e5 0girij ul9i 6 answer is true.