计量资料两组间实验结果比较常采用()
A.t检验
B.等比差值检验
C.等级序值法
D.χ2检验
E.质和法
参考答案:A
—How about ____ controlled breeding programme the US government began to save the red wolf?
—I should say it was ____ success, you see its number has increased
A.a ; a
B.the; a
C.a;不填
D.the ; 不填
四川盆地冬季暖于长江中下游平原的最主要原因是( )
A.纬度因素
B.海陆因素
C.地形因素
D.洋流因素