综合性统计是一种能更有效地概括大规模数据特征的方法。
参考答案:错
This special school accepts all disabled students, ________educational level and background.[ ]
A. according to
B. regardless of
C. in addition to
D. in terms of
攻螺纹前的螺纹直径应稍大于螺纹()
A.大径
B.中径
C.小径
D.外径