不能通过( )了解物质用量的变化快慢 Which of the following cannot be use...
单项选择题不能通过( )了解物质用量的变化快慢 Which of the following cannot be used to know how fast or slow does material uses change( )
A、统计物质用量年增长率 Estimating the annual growth rate of the material uses
B、绘制物质用量历史变化趋势图 Plotting a trend chart of the historical change in material uses
C、估算特定时期物质用量变化倍数 Estimating the change times of the material uses in a certain period of time
D、统计某一年份的物质用量 Counting the amount of material uses in a given year