Exception principle: refers to the fact that senior management personnel of an enterprise authorizes general daily affairs to be handled by subordinate managers, while retaining the decision-making and control rights on exceptions, which are generally important issues. Which of the following are exceptions? ['The chairman of a company is mainly responsible for all matters within the company, while the general manager is responsible for maintaining the relationship with the cooperation unit.', "A company's accounting system stipulates that department managers under 5,000 yuan will be approved by the department manager, and 5,000 yuan and above will be approved by the general manager.", 'The determination of part-time personnel in a management center is determined by the general manager. The determination of full-time personnel is determined by the board of directors.', 'At the weekly regular meeting, all middle managers must report the work summary for this week and the work plan for next week to the general manager.']