简述计数器的用途
参考答案:
记录脉冲个数、分频、产生节拍脉冲、数字运算
When they look back on the past few years, many people wonder ______.
A.where time has gone
B.where has time gone
C.where time will go
D.where will time go
暑邪易导致的证候是
A.瘾疹瘙痒,或肢体麻木,或面睑浮肿B.口鼻咽喉干燥,痰少质粘难咯C.胸闷脘痞,口腻纳呆,便溏不爽D.烦渴饮冷,肢倦乏力,汗多尿少