A:蒸发结晶
B:检查气密性
C:滴管常规取液后直接插回原滴瓶
D:塞进橡皮塞
如图,AB∥CF,E为DF的中点,AB=10,CF=6,则BD=____
There _______ a basketball game in our school tomorrow.
根据麦克斯韦电磁场理论可知 ( )