从宏观上分析，税收收入的决定因素主要有（）等。
A.经济增长水平
B.物价指数
C.宏观税负水平
D.重点税源税负水平
参考答案：A, B, C
In a certain cache system, the modified cache block is written to main memory only when the block is replaced. All of following are used to describe this policy EXCEPT
A． store-in
B． write-back
C． copy-back
D． write-through
在卧式车床上加工工件，应（）加工。
A、采用工序集中法
B、采用工序分散法
C、视工件要求选加工方法
