分析大于50mm的筛分手选资料,如手选资料反映出矸石的含量少,可设(),若矸石含量较多,不宜采用手选矸石,可以考虑采用()。
参考答案:手选、机械选矸
《操行零分》
Is there _________ in today’s newspaper?
A.something important
B.anything important
C.important something
D.important anything