限幅器是由何种元件、何种方式、何种特性构成的?
参考答案:
无论是串联限幅器还是并联限幅器,教师把二极管和电阻串联起来组成一个分压器,并利用二极管的单向导电特性构成的
In my opinion, it is the coach rather than the players that____.
A.is to blame
B.is to be blamed
C.are to blame
D.are to be blamed
下列哪项属于虎潜丸的药物组成()
A.龟版、黄柏
B.干姜、虎骨
C.知母、白芍
D.熟地、山萸肉
E.锁阳、陈皮