在衡量价格水平变动的常用指标中,用以衡量生产或批发环节价格变动的是( )。
A.消费物价指数
B.GDP平减指数
C.生产价格指数
D.投资品价格指数
参考答案:C
---You were tired out after the mountain climbing, weren't you?
---Yes, ______. I could hardly rise to my feet.
A.not at all
B.not a little
C.not a bit
D.not really
油底壳除存放机油外,亦有冷却机油的功效。