粉煤灰是按什么标准来划分等级的
参考答案：
解析：粉煤灰是按细度、含水量、烧失量和三氧化硫含量来划分等级的。
_______with a quite ordinary star like the sun, the earth is small indeed. [ ]
A. Compare
B. When comparing
C. Comparing
D. When compared
Which of the following will most likely lead to cost-push inflation（）
A. A decrease in the cost of financing.
B. An increase in the prices of raw materials.
C. A technology change that lowers production costs.
ed