单项选择题

如果有事情影响到正常工作，比如在施工过程中受伤了，不需要要告知你的上级。（） A. 对 B. 错

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不定项选择

领导者直接运用职位与权力影响他人

A．错误
B．正确

单项选择题

A monopolist faces a constant marginal cost of $1 per unit. If at the price he is charging,the price elasticity of demand for the monopolist's output is -0.5, then: A. the price he is charging must be 2. B. the price he is charging must exceed 2. C. the price he is charging must be less than 2. D. the monopolist can not be maximizing profits.