翻译并抄写下列单词(中英文各一遍)。 2、完成模拟卷5。面向人人词汇5、6.d...

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翻译并抄写下列单词(中英文各一遍)。 2、完成模拟卷5。面向人人词汇5、6.docx 面向人人冲刺模拟卷5 (1).docx

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【单选题】That most used cars are sold by intermediaries (i.e., used car dealers) provides evidence that these intermediaries

have been afforded special government treatment, since used car dealers do not provide information that is valued by consumers of used cars.

are able to prevent potential competitors from free-riding off the information that they provide.

have failed to solve adverse selection problems in this market because "lemons" continue to be traded.

have solved the moral hazard problem by providing valuable information to their customers.

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【单选题】In the nation of Transporta, the income elasticity of demand for used cars is -2.66. So when incomes in this nation increase by 10 percent,

the quantity of used cars demanded will increase by 26.6 percent.

used cars will be normal goods.

the quantity of used cars demanded will decrease by 26.6 percent.

the demand curve for used cars will shift rightward.

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【单选题】Despite their varied designs, navigation computers used in cars ______.

are more or less the same price

provide directions in much the same way

work on more or less the same principles

receive instructions from the same satellites

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【简答题】As more andmore cars are produced and used, so the _____ from their exhaust-pipes containsan even larger volume of poisonous gas. A. exposure B. distribution C.expansion D. emission

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【单选题】下列说法中，正确的是

已知25℃时NH 4 CN水溶液显碱性，则25℃时的电离常数K(NH 3 ·H 2 O)>K(HCN)

25℃时，Mg(OH) 2 固体在20 mL0．01 mol·L -1 氨水中的K sp 比在20 mL0．01 mol·L -1 NH 4 Cl溶液中的K sp 小

pH试纸测得新制氯水的pH为4．5

FeCl 3 溶液和Fe 2 (SO 4 ) 3 溶液加热蒸干、灼烧都得到Fe 2 O 3

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【单选题】血管扩张药用于治疗CHF的主要目的是

降低心输出量

减轻心脏的前后负荷

降低血压

扩张冠状动脉、增加心肌供氧量

减少心肌耗氧量

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【单选题】已知H3PO4的Kθa1= 7.5´10-3、Kθa2= 6.2´10-8、Kθa3= 2.2´10-13；NH3·H2O的Kθb=1.8´10-5。欲配制pH = 7.0的缓冲液，应选用的缓冲对是：

NH 3 ¾ NH 4 Cl

H 3 PO 4 ¾ NaH 2 PO 4

NaH 2 PO 4 ¾ Na 2 HPO 4

Na 2 HPO 4 ¾ Na 3 PO 4

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【单选题】( )27.某氯化钙溶液试剂瓶标签中显示浓度为5克/升,此浓度是指()。

质量浓度

体积分数

质量分数

摩尔浓度

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【单选题】已知 K b ɵ (NH 3 ·H 2 O)=1.8×10 -5 ,欲配制 1.0LpH=10.00 、 c (NH 3 ·H 2 O)=0.10mol·L -1 的缓冲溶液,需用 (NH 4 ) 2 SO 4 的物质的量为( )。

9.0×10 -3 mol

1.8×10 -2 mol

0.050mol

9.0×10 -2 mol

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【单选题】凯恩斯提出的最有特色的货币需求动机是

交易动机

预防动机

投资动机

投机动机

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have been afforded special government treatment, since used car dealers do not provide information that is valued by consumers of used cars.

are able to prevent potential competitors from free-riding off the information that they provide.

have failed to solve adverse selection problems in this market because "lemons" continue to be traded.

have solved the moral hazard problem by providing valuable information to their customers.

查看完整题目与答案

【单选题】In the nation of Transporta, the income elasticity of demand for used cars is -2.66. So when incomes in this nation increase by 10 percent,

the quantity of used cars demanded will increase by 26.6 percent.

used cars will be normal goods.

the quantity of used cars demanded will decrease by 26.6 percent.

the demand curve for used cars will shift rightward.

查看完整题目与答案

【单选题】Despite their varied designs, navigation computers used in cars ______.

are more or less the same price

provide directions in much the same way

work on more or less the same principles

receive instructions from the same satellites

查看完整题目与答案

【简答题】As more andmore cars are produced and used, so the _____ from their exhaust-pipes containsan even larger volume of poisonous gas. A. exposure B. distribution C.expansion D. emission

查看完整题目与答案

【单选题】下列说法中，正确的是

已知25℃时NH 4 CN水溶液显碱性，则25℃时的电离常数K(NH 3 ·H 2 O)>K(HCN)

25℃时，Mg(OH) 2 固体在20 mL0．01 mol·L -1 氨水中的K sp 比在20 mL0．01 mol·L -1 NH 4 Cl溶液中的K sp 小

pH试纸测得新制氯水的pH为4．5

FeCl 3 溶液和Fe 2 (SO 4 ) 3 溶液加热蒸干、灼烧都得到Fe 2 O 3

查看完整题目与答案

【单选题】血管扩张药用于治疗CHF的主要目的是

查看完整题目与答案

【单选题】已知H3PO4的Kθa1= 7.5´10-3、Kθa2= 6.2´10-8、Kθa3= 2.2´10-13；NH3·H2O的Kθb=1.8´10-5。欲配制pH = 7.0的缓冲液，应选用的缓冲对是：

NH 3 ¾ NH 4 Cl

H 3 PO 4 ¾ NaH 2 PO 4

NaH 2 PO 4 ¾ Na 2 HPO 4

Na 2 HPO 4 ¾ Na 3 PO 4

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【单选题】( )27.某氯化钙溶液试剂瓶标签中显示浓度为5克/升,此浓度是指()。

查看完整题目与答案

【单选题】已知 K b ɵ (NH 3 ·H 2 O)=1.8×10 -5 ,欲配制 1.0LpH=10.00 、 c (NH 3 ·H 2 O)=0.10mol·L -1 的缓冲溶液,需用 (NH 4 ) 2 SO 4 的物质的量为( )。

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【单选题】凯恩斯提出的最有特色的货币需求动机是

查看完整题目与答案

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