【判断题】按逻辑思维方法可以将系统安全分析方法划分为归纳法和演绎法
【判断题】发展不平衡,主要指各区域各领域各方面发展不平衡,制约了全国发展水平提升。
【判断题】发展不平衡,主要指各区域各领域各方面各阶段发展不平衡。
【单选题】The income elasticity of demand is the
A.
absolute change in quantity demanded resulting from a one unit increase in income.
B.
percent change in quantity demanded resulting from the absolute increase in income.
C.
percent change in quantity demanded resulting from a one percent increase in income.
D.
percent change in income resulting from a one percent increase in quantity demanded.
E.
percent change in income resulting from a one percent increase in price.
【判断题】我国的发展不平衡,主要指各区域各领域各方面发展不平衡。
【单选题】The income elasticity of demand is largest for
【简答题】Income elasticity of demand
【单选题】Assume the price elasticity of demand for tobacco is 0.5, and the income elasticity of demand for tobacco is 0.4. Then:
A.
an increase in the price of tobacco will decrease total revenue from sales of tobacco.
B.
a 20% increase in the price of tobacco will decrease the quantity demanded of tobacco by 8%.
C.
tobacco is an inferior good.
D.
a 50% increase in income will increase the quantity demanded of tobacco by 20%.
【单选题】摆动配对是指:
A.
反密码子第一个碱基与密码子第三个碱基配对不严格
B.
反密码子第三个碱基与密码子第一个碱基配对不严格
C.
反密码子第一、二碱基与密码子第三、四碱基配对不严格
D.
反密码子第三、四碱基与密码子第一、二碱基配对不严格
E.
反密码子的三个碱基与密码子的三个碱基配对都不严格