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【简答题】
收到含水率5%的砂子500t,实为干砂多少吨?若需干砂500t,含水率5%的砂子多少吨?
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【单选题】How many cars can be parked in the Mall of America?
A.
350
B.
2750
C.
7500
D.
1965
【单选题】How many cars are towed from the streets each year?
A.
Hundreds of thousands of cars.
B.
Thirty million old cars.
C.
One million junked cars.
D.
Five million cars altogether.
【单选题】如果一个时间序列中蕴含有季节效应,我们需要采取的平稳化方法是( )
A.
1阶差分
B.
4阶差分
C.
4步差分
D.
2阶差分
【简答题】Robots have come a long way since 15th century. We’ve got robots to build cars, carry heavy things, work in erous places and explore planets. But things haven’t stopped there. In 1986, Honda made ...
【单选题】Approximately how many electric cars are now on California roads?
A.
200
B.
2,000
C.
20000
D.
200000
【判断题】为了方便行走,维修技师可穿着运动鞋进行汽车维护作业。
A.
正确
B.
错误
【简答题】I fell in love with Yosemite National Park the first time I saw it, when I was 13. My parents took us there for camping. On the way out, I asked them to wait while I ran up to E1 Capitan, a ___16___ r...
【多选题】含有线性趋势的时间序列是( )
A.
平稳时间序列
B.
非平稳时间序列
C.
1阶差分平稳序列
D.
2阶差分平稳序列
【简答题】根据句子,写出划线词组的中文解释。 1. In those days,he used to give away a part of his income to help his friend. _______________ 2. Both sides argued with reason,and neither would give in. _______________ 3. If they ...
【简答题】完形填空。 I fell in love with Yosemite National Park the first time I saw it, when I was 13. My parents took us there for camping. On the way out, I asked them to wait while I ran up to E1 Capitan, a 1 ro...
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