题目内容

Benchmarks for a company must be created based on the previous performance of the company.

A. 对
B. 错

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Employers establish specific policies defining theft and fraud and discipline procedures. This is an example of a concurrent control measure to control employee theft.

A. 对
B. 错

Job uncertainties and employee stress are factors that contribute to workplace violence.

A. 对
B. 错

适用于900~2000MHz室内环境的传播模型是

A. Okumura-Hata模型
B. Cost231-Hata模型
Cost231-WI模型
D. Keenan-Motley模型

下列哪项不是按照工作频率对天线进行分类

A. 长波天线
B. 中波天线
C. 短波天线
D. 雷达天线

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