单项选择题

一个最优方案一定是可行方案。
A、正确
B、错误

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单项选择题

In a speech about local crime rates, Hanna stated, “The Chief of Police says that neighborhood watch programs are the best defense against property crimes.” What type of support is this?
A、Personal experience.
B、Direct observation.
C、Factual testimony.
D、Opinion testimony.

智慧树知到《社会心理学（西安交通大学）》2023章节测试答案-2

答案： B、帮助

C、攻击

D、道德

正确答案：C

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