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【单选题】
某循环式混凝土搅拌机,设计容量(即投料容量)v为0.4m3,混凝土出料系数KA取0.67,混凝土上料、搅拌、出料等时间分别为:60S、120S、60S,搅拌机的时间利用系数KB为0.85。求该混凝土搅拌机的台班产量为多少?A.
27.336（m3/台班）
B.
1.822（m3/台班）
C.
4.02（m3/台班）
D.
40.8（m3/台班）
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【单选题】Refer to Figure 9-6. The size of the tariff on carnations is
A.
$8 per dozen.
B.
$6 per dozen.
C.
$4 per dozen.
D.
$2 per dozen.
【单选题】Refer to Figure 9-6. With trade and without a tariff,
A.
the domestic price is equal to the world price.
B.
carnations are sold at $8 in this market.
C.
there is a shortage of 400 carnations in this market.
D.
this country imports 200 carnations.
【单选题】Refer to Figure 3. To internalize the externality in this market, the government should
A.
impose a tax on this product
B.
provide a subsidy for this product
C.
forbid production
D.
produce the product itself
【单选题】Figure 9-3. The domestic country is China. Refer to Figure 9-3. With no international trade,
A.
the equilibrium price is $12 and the equilibrium quantity is 300.
B.
the equilibrium price is $16 and the equilibrium quantity is 200.
C.
the equilibrium price is $16 and the equilibrium quantity is 300.
D.
the equilibrium price is $16 and the equilibrium quantity is 450.
【单选题】Figure 9-6 Refer to Figure 9-6. Without trade, the equilibrium price of carnations is
A.
$8 and the equilibrium quantity is 300.
B.
$6 and the equilibrium quantity is 200.
C.
$6 and the equilibrium quantity is 400.
D.
$4 and the equilibrium quantity is 500.
【单选题】Figure 9-4. The domestic country is Nicaragua. Refer to Figure 9-4. With trade, Nicaragua
A.
imports 150 calculators.
B.
imports 250 calculators.
C.
exports 100 calculators.
D.
exports 250 calculators.
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