人格是环境与遗传交互作用的产物，人格的形成即受先天遗传因素的影响，也受后天环境的影响。（）
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表演型人格障碍的特征是事事以自我为中心，不顾及别人的感受，并以此作为自己行为准则的人格障碍。（）
A. 对
B. 错
Explain enterprise resource planning systems.
Which of the following is a core activity according to the value chain model?
A. firm infrastructure
B. customer service
C. human resources
D. procurement
According to the value chain model, which of the following is a support activity?
A. technology development
B. marketing and sales
C. inbound logistics
D. operations and manufacturing
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