CMOS门电路的特点:静态功耗_______(很大,极低);而动态功耗随着工作频率的提高而________(增加,减小,不变);输入电阻________(很大,很小);噪声容限________(高,低,等)于TTL门。
查看答案
下列哪种触发器可用于移位寄存器:
A. 基本RS触发器
B. D触发器
C. JK触发器
D. T触发器
E. T'触发器
The main component of stones in gallbladder is ____
A. cholesterol
B. bilirubin
C. bile pigment
D. bile acid
With a pathologic diagnosis based on_____, cirrhosis is described as either micronodular or macronodular.
A. liver biopsy
B. liver CT scan
C. liver blood test
D. liver ERT
_______is spread by fecal-oral contamination.
A. type A hepatitis
B. type B hepatitis
C. type C hepatitis
D. type D hepatitis