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【多选题】
影响煤粉经济细度的因素有( ) 。A.
干燥无灰基挥发分 Vdaf
B.
磨煤机
C.
粗粉分离器
D.
细分分离器
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反馈参考答案：
举一反三
【简答题】中药林芝中_____元素含量最丰富。
【单选题】A new term has begun.Teachers are _____1_____ about the fact that new students are not easy to deal with.They like to bring cellphones and MP3 players to school.What is _____2_____ , some students eve...
A.
excited
B.
worried
C.
surprised
D.
interested
【单选题】Every year a number of students graduate from the school which will ______ new students the first week in September.
A.
enroll
B.
recruit
C.
collect
D.
reproduce
【简答题】中药林芝中什么元素含量最丰富?
【简答题】声音的数字化过程涉及三个步骤,下列________不属于三个步骤。
【单选题】At the beginning of the new term, the teacher asked several students to help _______ the new books to the students in the class.
A.
publish
B.
distribute
C.
represent
D.
treasure
【简答题】用户是通过（）或者程序接口向计算机发出请求的。
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