问题如下图：
选项：
A. 
B. 
C. 
解释：
老师，这道题目必须要一年一年都算出来吗？
可以根据2009年 一年的该数据的绝对值就做判断吗？
NO.PZ201602060100002007 问题如下 7. Baseon the ratios for operating cash flow before interest antaxes to operating income, Abshoulconclu that: A.Bickchip’s earnings are backecash flow. B.Bickchip’s earnings are not backecash flow. C.Abcno conclusion e to the changes in the ratios over time. A is correct.Operating cash flow before interest antaxes to operating income rises stealy (not erratically) from 1.2 to 1.3 to 1.9. The ratios over 1.0 anthe trenincate thearnings are supportecash flow.解析从2007到2009年，Operating cash flow before interest antaxes to operating income分别是1.2,1.3和1.9，都大于1且趋势是变高，分子代表了经营现金流，分母代表经营利润，分子大于分母说明经营利润是由现金流支撑的。 请问是这个ratio 持续稳定的大于一就是说明operating income是被cash flow backe么？ 如果ratio大于一 但是有下降趋势呢？
NO.PZ201602060100002007 问题如下 Quentin Abay, CFis analyst for a private equity firm interestein purchasing Bickchip Enterprises, a conglomerate. His first task is to termine the tren in ROE anthe main ivers of the tren using Pont analysis. To so he gathers the ta in Exhibit 1.Exhibit 1. SelecteFinancita for Bickchip Enterprises (€ Thousan)After concting the Pont analysis, Abbelieves thhis firm coulincrease the ROE without operationchanges. Further, Abthinks thROE coulimprove if the company vestesegments thwere generating the lowest returns on capitemploye(totassets less non-interest-bearing liabilities). Segment EBIT margins in 2009 were 11 percent for Automation Equipment, 5 percent for Power anInstrial, an8 percent for MecEquipment. Other relevant segment information is presentein Exhibit 2.Exhibit 2. Segment ta for Bickchip Enterprises (€ Thousan)Abis also concernewith earnings quality, so he inten to calculate Bickchip’s cash-flow-baseaccruals ratio anthe ratio of operating cash flow before interest antaxes to operating income. To so, he prepares the information in Exhibit 3.Exhibit 3. Earnings Quality ta for Bickchip Enterprises (€ Thousan)7. Baseon the ratios for operating cash flow before interest antaxes to operating income, Abshoulconclu that: A.Bickchip’s earnings are backecash flow. B.Bickchip’s earnings are not backecash flow. C.Abcno conclusion e to the changes in the ratios over time. A is correct.Operating cash flow before interest antaxes to operating income rises stealy (not erratically) from 1.2 to 1.3 to 1.9. The ratios over 1.0 anthe trenincate thearnings are supportecash flow.解析从2007到2009年，Operating cash flow before interest antaxes to operating income分别是1.2,1.3和1.9，都大于1且趋势是变高，分子代表了经营现金流，分母代表经营利润，分子大于分母说明经营利润是由现金流支撑的。 能具体说下是用哪几个数算的ratio吗？
