回答问题:How many degrees of murder were there, according to the common law?
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回答问题:What is the difference between murder and manslaughter?
回答问题:What is the classic example of voluntary manslaughter?
回答问题:What is involuntary manslaughter?
正交向量组(假设不含有零向量)必定线性无关
A. 对
B. 错