问题
单项选择题
GL-2C螺旋选矿机最适宜的选矿粒度是（）
A.0.4-0.1
B.0.4-0.045
C.0.1-0.04
答案
参考答案：B
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GL-2C螺旋选矿机最适宜的选矿粒度是（）
A.0.4-0.1
B.0.4-0.045
C.0.1-0.04
参考答案：B
摘录信息，阅读短文， 然后完成内容摘要。 Peter: I found an ID card. My phone number is 512-8843 Jim: I lost a computer game. If you find, call me at 680-7432. Paul: I lost an English dictionary. Who found it, please call 555-0287. Sam: I found a notebook with the name (有……名字) “Kevin Clark”. My phone number is 476-3539.
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