A:v(A)=0.15mol/(L•min)
B:v(B)=0.01mol/(L•s)
C:v(C)=0.40mol/(L•min)
D:v(D)=0.45mol/(L•min)
观察微小的生物个体时,要根据实际情况选择使用放大镜或显微镜。
The good news quickly in our school and we all know it now.
已知北京的经纬度度数为(40°N,116°E),则( )