在数字电路中,门电路是用得最多的器件,它可以组成计数器、分频器、寄存器、移位寄存器等多种电路。
参考答案:错
-What should I wear to attend his wedding party?
-Dress ____ you like. [ ]
A. what
B. however
C. whatever
D. how
咳大量脓性痰见于()
A.支气管扩张
B.支原体肺炎
C.充血性心力衰竭
D.慢性支气管炎
E.细支气管肺泡癌