In relation to capital and financing:

(a) Explain the legal provisions that govern the redemption of shares on the demand of a shareholder of a shareholding company. (4 marks)

电源采用漏电保护器做分级保护时，应满足上，下级开关动作的选择性．一般上一级漏电保护器的额定漏电电流不小于下一级漏电保护器的额定漏电电流。