Economies of scope mean that doubling output of any one service or package of services will result in less than doubling production costs because of greater efficiencies in using the firm`s resources to produce multiple units of the same service package。（ ）

Economies of scope mean that doubling output of any one service or package of services will result in less than doubling production costs because of greater efficiencies in using the firm`s resources to produce multiple units of the same service package. A: 对 B: 错

If the price elasticity of demand for a good is 1; then doubling the price of that good will leave total expenditures on that good unchanged

They _____ the price of house in the past ten years. A: doubled B: have doubled C: double D: are doubling

For a given reaction, doubling the temperature will increase the reaction rate by () A: 2 B: 0.61 C: 2.7 D: 1.6

5.Having several instances of the same data is called data _______. A: repetition B: duplication C: doubling D: redundancy

What is _____ him is that it is difficult to find his son a good jo. A: doubling B: dissuading C: disturbing D: distracting

Comparing<br/>the primary tumor, the doubling time and growth rate of metastatic<br/>tumor cells are() A: Longer,<br/>slower B: Longer,<br/>faster C: Shorter,<br/>faster D: Shorter,<br/>slower, E: Equal,<br/>equal

关于肺结节的恶性概率的评估，哪项错误 A: 总的来说纯磨玻璃密度结节恶性程度最高，其次是部分实性结节，实性结节恶性程度最低 B: 随访过程中肺结节的生长是提示恶性的重要指标，计算容积倍增时间（volume doubling time, VDT）可作为量化结节生长速度的指标 C: 恶性结节的临床特征可表现为：年长，重度吸烟，大结节，边缘不规则，和（或）位于上叶 D: 对于实性成分>8 mm的肺结节，PET-CT有助于鉴别良性或恶性；但PET-CT对纯磨玻璃结节及实性成分≤8 mm肺结节的鉴别诊断无明显优势。