贮存时间大约为0.25~2秒的记忆是_______。
贮存时间大约为0.25~2秒的记忆是___________。
计算0.25×(1.3+1.3+1.3+1.3)的简便算法是(0.25×4)×1.3______.
1.25×0.25×4×8=1.25×8+0.25×4=11______.
简算:0.25×4.78×40.65×2011.2×2.5+0.8×2.54.8×0.256.53÷0.4÷2.51.8×20.1.