废气锅炉万一“空炉”工作，除需预先吹灰外，烟气温度应限在（）以下。
A.250℃
B.300℃
C.350℃
D.400℃
参考答案：C
修补防水层破损处时，所用的补钉一般剪成______。
A．圆形 B．正方形 C．长方形 D．三角形
In relation to corporate governance:
(a) Explain the matters that fall within the exclusive competence of the general meeting of shareholders of a company limited by shares. (5 marks)
