计算题：棒材中轧轧辊辊径为φ430MM，每次返茬量为5MM，请计算二茬辊辊径为多少？
参考答案：
二茬辊辊径=430MM-5MM=425MM
Under the Companies Ordinance, 1984:
(c) state the consequences of an ineligible person acting as a director. (3 marks)
