600轨距外轨抬高值不得超过()。
A.40mm
B.50mm
C.60mm
参考答案:B
彩虹是太阳光传播中被空中水滴______而产生的,电视画面的颜色是由______三种色光合成的.
An analyst does research about financial ratios and gathers the following information about CBN Manufacturing Inc. (in millions):
Based on this information, which of the following ratios most likely decreases in 2011 over 2010()
A. Return on equity.
B. Financial leverage.
C. Total asset turnover.