【判断题】安全和效率的关系问题是民商规范的应然性差异之一。
【判断题】全血液的比重主要取决于红细胞的数量和血浆蛋白的含量。
【判断题】全血液的比重主要取决于红细胞的数量和血浆蛋白的含量
【单选题】全血的比重主要取决于红细胞的数量和血浆蛋白的含量。( )
【单选题】The population growth in countries with higher per capita income ______.
A.
comes not from the birth rate of the citizens but rather from the influx of others.
B.
is a natural result because the citizens have more money for children.
C.
is only an artifact based on a declining birth rate.
D.
does not invalidate the population growth of poorer countries.
【判断题】Increasing per capita incomes and growth in the availability of leisure time are important determinants of tourism demand.