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【多选题】
以下关于数据矩阵和相异性矩阵的说法,正确的是A.
数据矩阵的大小取决于数据集中数据对象的数目和属性的数目。
B.
相异性矩阵的大小取决于数据集中数据对象的数目，与属性的数目无关。
C.
数据矩阵一定是对称的。
D.
相异性矩阵一定是对称的。
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反馈参考答案：
举一反三
【单选题】The company wanted a more modern look, so it decided to change its logo.
A.
The company chose a new name.
B.
The company wanted a new symbol.
【多选题】Jehovah wanted to bring Israelites up out of Egypt to the country of the ____________________________________________.
A.
Canaanites
B.
Midianites
C.
Hittites
D.
Perizzites
E.
Hivites
F.
Jewishites
【单选题】Why do you think Gary wanted to do something different? Choose your predictions.
A.
He was bored with his job.
B.
He wanted to travel around the world.
C.
He decided to start his own business.
D.
He wanted to spend more time with his family.
【简答题】一名政界同事
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