The substitution effect of a decrease in the wage will
A. decrease leisure, regardless of whether leisure is a normal or inferior good.
B. increase leisure, regardless of whether leisure is a normal or inferior good.
C. increase leisure only if leisure is a normal good.
D. decrease leisure only if leisure is a normal good.
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If an individual's labor supply curve is backward bending, then
A. the income effect associated with a higher wage is greater than the substitution effect.
B. the substitution effect associated with a higher wage is greater than the income effect.
C. the substitution effect associated with a higher wage encourages more leisure.
D. A and C
E. B and C
An increase in technology that enhances labor productivity will likely result in:
A. a decrease in labor employment and an increase in the wage rate.
B. an increase in labor employment and an increase in the wage rate.
C. a decrease in labor employment and a decrease in the wage rate.
D. an increase in labor employment and a decrease in the wage rate.
E. employers using less labor and more capital while the wage effect is unknown.
下列关于构件概念的正确表述是（）项。
A. 构件是由零件组合而成的。
B. 构件是机器的装配单元。
C. 构件是机器的制造单元。
D. 构件是机器的运动单元。
机器与机构的主要区别在于（）。
A. 机器的运动较为复杂。
B. 机器结构复杂。
C. 机器能完成有用的机械功或实现能量转换。
D. 机器能变换运动形式。
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