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【单选题】
当带速较低时,带轮的材料一般选用 ( )。A.
铸铝
B.
球墨铸铁
C.
铸钢
D.
灰铸铁
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反馈参考答案：
举一反三
【简答题】我国历史上第一次有记载的演讲是《尚书》中的 。
【简答题】For this part, you are allowed 30 minutes to write a composition on the topic College Graduates on the Job Market. You should write at least 120 words, and base your composition on the chart and outli...
【单选题】听力原文： I will let you know that there's a big difference between undergraduate and graduate school. Undergraduate school is very course-intensive. That's all you do: go to classes and go to labs. In gr...
A.
A pupil
B.
A graduate.
C.
A senior.
D.
An undergraduate.
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