We are going to play table tennis________.
A:at tomorrow
B:in next Sunday
C:yesterday
D:the day after tomorrow
一本物理书静止在水平桌面上,下列各对力中属于平衡力的是( )
0.05.9. ____ 0.0.59.
1.6÷0.13____1.6
7.3×0.99____7.3×1.01
5.67÷0.12____56.7÷1.2.