A:(−∞,−2∪4,+∞)
B:(−∞,−4∪2,+∞)
C:(−2,4)
D:(−4,2)
All the students p____ at the lecture were deeply touched by his success story.
在如图所示的电路中,闭合开关,下列说法中正确的是( )
尿液的形成及排出过程中会依次流经不同器官,正确表示此过程的流程图是( )