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【单选题】
用麻花钻扩，应把钻头外缘处的前角修磨得___些。A.
小
B.
大
C.
和钻孔一样大
D.
以上均可
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反馈参考答案：
举一反三
【判断题】If, for an imaginary closed economy, investment amounts to $10,000 and the government is running a $2,500 deficit, then private saving must amount to $12,500.
A.
正确
B.
错误
【判断题】If, for an imaginary closed economy, investment amounts to $12,000 and the government is running a $2,000 deficit, then private saving must amount to $10,000.
A.
正确
B.
错误
【单选题】For an imaginary economy, the consumer price index was 115.00 in 2004, 126.50 in 2005, and 136.62 in 2006. Which of the following statements is correct?
A.
For this economy, the base year must be 2004.
B.
If the basket of goods that is used to calculate the CPI cost $75.00 in the base year, then that basket cost $115.00 in 2004.
C.
This economy’s rate of inflation for 2006 is 10.12 percent.
D.
None of the above is correct
【单选题】关于我国航天史，下列表述不正确的是( )
A.
1970年，我国第一颗人造卫星东方红一号成功升空
B.
2003年，我国嫦娥一号成功奔月
C.
2008年，神舟7号，搭载三名宇航员进入太空，翟志刚完成首次出舱行走
D.
2008年，神舟8号飞船与天宫一号成功对接
【单选题】For an imaginary economy, the consumer price index was 115.00 in 2014, 126.50 in 2015, and 136.62 in 2016. Which of the following statements is correct?
A.
For this economy, the base year must be 2014.
B.
If the basket of goods that is used to calculate the CPI cost $75.00 in the base year, then that basket of goods cost $115.00 in 2014
C.
This economy’s rate of inflation for 2016 is 10.12 percent
D.
None of the above is correct
【判断题】If, for an imaginary closed economy, investment amounts to $10,000 and the government is running a $2,500 deficit, then private saving must amount to $12,500.
A.
正确
B.
错误
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