扩孔时，因切削深度较小，切削角度可取（）值，使切削省力。
A、很大
B、较大
C、很小
D、较小
参考答案：B
And the horses _____ up to the finish line. They're neck and neck... neck and neck all the way.
Oh, the Italian horse Mamma Mia _____ the race! [ ]
A. come; is winning
B. have come; wins
C. are coming; won
D. are coming; wins
广义的统计表包括（）
A.调查表
B.整理汇总表
C.统计分析表
D.年龄分组表
E.职业分组表
