XYZ Co is a shareholding company. At its most recent general meeting of shareholders, the proceedings were disrupted by Hai, an angry shareholder, who fi ercely objected to the policy decisions taken by the board of management on the future strategy of the company. Several other shareholders supported Hai, and it quickly became clear that order could not be restored. Chien, the chairman of the meeting, quickly announced that the meeting would be abandoned immediately and reconvened in four days time. He stated that Hai would be excluded from the meeting, and a further item would be added to the agenda to give power to the board of management to exclude individuals from participating in future meetings if it was felt that they would be disruptive.Required:

(b) Explain the implications of the decision to exclude Hai from the rearranged meeting and the proposal to confer powers on the board of management to restrict the participation of potentially disruptive shareholders in future meetings. (5 marks)

电气设备高压、低压是以多少为分界？（）

A、100000V

B、5000V

C、500V

D、1000V