test_copy1012 (id: 0b7bbc175)

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[判断题]
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a vector has a directhcs m ql3i.i/l- j,8 kqs5tlo,pohl2fmv5 t4 0ion.

参考答案: 


本题详细解析:
This is true because a vector is a quantity with not only x w7,9 (drshmya magnitude but also a direction. So the an(79r yswm x,hdswer is true.