题目内容

In a closed economy, national saving is()

A. usually greater than investment.
B. equal to investment.
C. usually less than investment because of the leakage of taxes.
D. always less than investment.

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According to the definitions of national saving and private saving, if Y,C, and G remained the same, an increase in taxes would ()

A. raise both national saving and private saving.
B. raise national saving and reduce private saving.
C. leave national saving and private saving unchanged.
D. leave national saving unchanged and reduce private saving.

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Suppose that in a closed economy GDP is 11,000, consumption is 7,500, and taxes are 2,000. What value of government purchases would make national savings equal to 1,000 and at that value would the government have a deficit or surplus?()

A. 2,500, deficit
B. 2,500, surplus
C. 1,000, deficit
D. 1,000, surplus

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以下说法正确的是（）：

A. +运算符连接的两边既可以是数值型也可以是字符型数据
B. *运算符连接的两边必须是相同类型的数据
C. //运算符连接的两边必须都是整数，运算结果也是整数
D. python运算符既有双目运算符又有单目运算符

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关于字符串下列说法错误的是（）

A. 1个中文字符长度为2，1个英文字符长度为1
B. 两个字符串可以用加号运算符连接起来
C. 因为单引号和双引号被用作字符串分隔符，因此在字符串里不能出现单引号和双引号
D. 在三引号括起的字符串中可以包含换行回车等特殊字符

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In a closed economy, national saving is()

A. usually greater than investment. B. equal to investment. C. usually less than investment because of the leakage of taxes. D. always less than investment.

According to the definitions of national saving and private saving, if Y,C, and G remained the same, an increase in taxes would ()

Suppose that in a closed economy GDP is 11,000, consumption is 7,500, and taxes are 2,000. What value of government purchases would make national savings equal to 1,000 and at that value would the government have a deficit or surplus?()

以下说法正确的是（ ）：

关于字符串下列说法错误的是（ ）

A. usually greater than investment.
B. equal to investment.
C. usually less than investment because of the leakage of taxes.
D. always less than investment.

以下说法正确的是（）：

关于字符串下列说法错误的是（）