皮皮学，免费搜题
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【单选题】
下列各项费用中,所投资比重的提高,意味着生产技术进步和生产部门有机构成提高的是( )。
A.
设备工器具购置费
B.
财务费用
C.
土地费用
D.
建筑安装工程费用
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】Assume that PPP holds in the long run. If the price of a tradable good is $20 in the U.S. and 100 pesos in Mexico; and the exchange rate is 7 pesos/$ right now, which of the following changes might we...
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B.
a decrease in the price of the good in Mexico
C.
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D.
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【判断题】51单片机5个中断源相应地在芯片上都有中断请求输入引脚。
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【单选题】等截面直杆的弯矩传递系数C与下列哪种因素有关? ( )。
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