肺动脉中血液成分是( )
直接写得数.
10÷0.01=____
0.22+0.8=____
10﹣2.05=____
3.5×0.4=____
4÷0.25=____
0÷19.8=____
0.2×0.05=____
0.6×1.5=____
1.36+2.87+3.64=____
1.8×0.4×0.25=____