40.新冠肺炎疫情蔓延，臺灣在短時間內完成口罩機台建置，成功的關鍵是整個機械產業都投入加速機器生產，相當 於台灣的工具機產業能量全都投入支持，幫助設備如期如質生產出來，這種產業合作的口罩國家隊策略，最接近 下列哪一項概念？
(A)水平分工
(B)水平整合
(C)垂直分工
(D)垂直整合。

1. If the intersection of the IS and LM schedules lies above the BP curve, then (A)there is a balance of payments surplus. (B) there is a balance of payments deficit. (C) the three curves are in equilibrium. (D)net foreign investment is decreasing.

2. If the BP curve sits above the intersection of IS and LM, then (A)the real interest rate and the real income levels are too high resulting in a balance of payments surplus. (B) the nominal interest rate and the real income levels are inconsistent with a balance of payments equilibrium. (C) real money demand is not equal to real income balances. (D)real income balances are greater than real trade balances.

3. If the price level decreases (A)the LM curve will shift to the right. (B) the LM curve will shift to the left. (C) the IS curve will shift to the right. (D)the IS curve will shift to the left.

4. In the figure above, point B represents (A)a current account surplus. (B) a reduction in inventories. (C) a current account deficit. (D)a temporary imbalance in the money markets.

5. The difference between panel A and panel B above is the (A)degree of capital mobility. (B) the choice of policy used. (C) exchange rate regime. (D)degree of price stability.

6. Suppose the price of A is $20, the price of B is $10, and that the consumer is currently spending all available income. At the consumer’s current consumption basket the marginal utility of A is 8 and the marginal utility of B is 2. (A)The consumer is currently maximizing utility. (B) The consumer could increase utility by consuming more of good A and less of good B . (C) The consumer could increase utility by consuming more of good B and less of good A . (D)Nothing can be said about the consumer’s utility because we do not know the consumer’s income or utility function.

7. Suppose that U(x,y) = min(3x,y). Further suppose that Px = $5 per unit and Py = $10 per unit and income is I = $105. For this consumer, the optimal basket to buy would be (A)(x,y) = (9,3) (B) (x,y) = (3,1) (C) (x,y) = (1,3) (D)(x,y) = (3,9)

8. Suppose that MUx = 10 and MUy = 20. Further suppose that the consumer’s budget constraint can be expressed as 20x + 10y = 400. For this consumer, the optimal amount of good x to buy would be (A)5. (B) 0. (C) 20. (D)40.

9. Suppose the consumer’s utility function is given by U(x,y) = xy + y. The equation for this consumer’s demand curve for y when I ＜ Px is (A)y d = 0 (B) (C) (D)y d = 1/2

10. Consider a production function of the form Q = K2 L2 . What is the marginal rate of technical substitution of labor for capital at the point where K = 5 and L = 125? (A)5 (B) 25 (C) 50 (D)0.04

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