Put up a slogan at the entrance of the police station

Analysis of test questions: The "brand" in the test questions refers to the company's reputation and image, which comes out through the company's product quality and service system. To maintain the company's image and establish a brand, we need to ensure that the company provides high-quality products and services, and we need the joint efforts of the company's employees. Therefore, ② ⑤ is correct; ① ④ There are deviations and mistakes in understanding; (3) too absolute, wrong. Choose b for this topic.