题目内容

将多个测量项目同时展示给被调查者,并要求他们根据某个标准对这些测试项目进行排序或分成等级的量表属于()

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1.Helen is worried about food safety.
2. So far, the contaminated baby milk hasn't caused any deaths yet.
3. Food incidents occur not as often nowadays as before.
4. Food safety is an old problem.
5. Public confidence in the milk industry will be back soon.

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