Calibri;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;mso-font-kerning:1.0pt;}</style.РРР年限Р Р利息 10% 或(1+r) n的折现率Р Р年均支出Р Р现值Р Р1Р РРР0.909Р Р-$4,000.00Р Р-$3,636.00Р Р2Р Р0.826Р Р-$4,000.00Р Р-$3,304.00Р Р3Р Р0.751Р Р-$4,000.00Р Р-$3,004.00Р РРР Р现值Р Р-$9.944.00Р Р也可以这样计算：Р Р现值= -$4,000*(0.909+0.826+0.751) = - $9,944Р Р或现值=$4,000*2.486（年金折现率）= - $9,994Р Р Р177 Which type of contract requires that the buyer keep the tightest labor/material cost control?РA. Cost Plus Incentive FeeРB. Cost Plus Percentage of CostsРC. Cost Plus Fixed FeeРD. Firm Fixed PriceРE. Firm Fixed Price Plus IncentiveРР正确答案：B
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