總需求（AD）：练习题

Which of the following would be classified as an injection into the circular flow of income for a national economy?

Which of the following would cause a rightward shift in the Aggregate Demand (AD) curve?

Which of the following would most likely cause a rightward shift in the Aggregate Demand (AD) curve by specifically affecting the Investment (I) component?

If the savings ratio in an economy increases from \( 10\% \) to \( 15\% \), what is the most likely immediate impact on the Aggregate Demand (AD) curve, ceteris paribus?

Which of the following scenarios would lead to an improvement in a country's net trade balance, assuming all other factors remain constant?

Which component of Aggregate Demand (AD) is represented by the formula \( AD = C + I + G + (X - M) \) when referring to the value of goods and services sold to other countries minus those bought from other countries?

Identify and explain the wealth effect as a factor that can cause a shift in the Aggregate Demand (AD) curve.

Briefly explain how a significant appreciation of a country's currency is likely to affect its Aggregate Demand (AD).