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【单选题】
以Fe3+/Fe2+为正极，Cu2+/Cu 为负极组成原电池，测得电动势为E1，将氨水加入 Cu2+/Cu 电极后，测得电动势为E2，可得到以下哪个结论？
A.
E 2 > E 1
B.
E 2 = E 1
C.
E 2 < E 1
D.
A 、 B 、 C 都不成立
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举一反三
【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.
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【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.
查看完整题目与答案
【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
查看完整题目与答案
【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.
查看完整题目与答案
【单选题】一般需经3~4周培养才能见到有细菌生长的细菌是
A.
结核分枝杆菌
B.
淋病奈瑟菌
C.
霍乱弧菌
D.
金黄色葡萄球菌
E.
产气荚膜梭菌
查看完整题目与答案
【单选题】相比于直接试错法，TRIZ解题模式采用了()，也可以说是一种“过桥”的方式。
A.
回复策略
B.
特殊策略
C.
迂回策略
D.
中止策略
查看完整题目与答案
【单选题】一般需经3～4周培养才能见到有细菌生长的细菌是
A.
结核分枝杆菌
B.
淋病奈氏菌
C.
空肠弯曲菌
D.
炭疽杆菌
E.
军团菌
查看完整题目与答案
【单选题】以下哪个不属于专职抗原提呈的细胞是
A.
单核吞噬细胞
B.
B细胞
C.
树突状细胞
D.
T细胞
E.
巨噬细胞
查看完整题目与答案
【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.
查看完整题目与答案
【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.
查看完整题目与答案
相关题目：
【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.
查看完整题目与答案
【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.
查看完整题目与答案
【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
查看完整题目与答案
【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.
查看完整题目与答案
【单选题】一般需经3~4周培养才能见到有细菌生长的细菌是
A.
结核分枝杆菌
B.
淋病奈瑟菌
C.
霍乱弧菌
D.
金黄色葡萄球菌
E.
产气荚膜梭菌
查看完整题目与答案
【单选题】相比于直接试错法，TRIZ解题模式采用了()，也可以说是一种“过桥”的方式。
A.
回复策略
B.
特殊策略
C.
迂回策略
D.
中止策略
查看完整题目与答案
【单选题】一般需经3～4周培养才能见到有细菌生长的细菌是
A.
结核分枝杆菌
B.
淋病奈氏菌
C.
空肠弯曲菌
D.
炭疽杆菌
E.
军团菌
查看完整题目与答案
【单选题】以下哪个不属于专职抗原提呈的细胞是
A.
单核吞噬细胞
B.
B细胞
C.
树突状细胞
D.
T细胞
E.
巨噬细胞
查看完整题目与答案
【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.
查看完整题目与答案
【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.
查看完整题目与答案