指数平滑预测法中的平滑常数。数值越小，对数列的修匀效果越好。（）
参考答案：对
— _______________?
— It's above the table.[ ]
A. What's this
B. How are you
C. Is it your book
D. Where's the book
十进制数45用二进制数表示是
A．1100001
B．1101001
C．0011001
D．101101
