多级压缩机的级数表示（）。
A.压缩机的气缸数
B.压缩机的叶轮数
C.压缩气体所需冷却的次数
D.离心压缩机转子转数的等级数
参考答案：C
In relation to the Companies Act 1965:
(b) Explain the procedure for the variation of class rights as provided for under Table A of the Fourth Schedule as well as the protection afforded to a shareholder who had objected to such a variation. (5 marks)
可以全面了解单位工程成本构成和降低成本来源的施工成本分析方法是（）。
A.分部分项工程成本分析
B.月(季)度成本分析
C.年度成本分析
D.竣工成本综合分析
