皮皮学，免费搜题
登录
搜题
【简答题】
数字电路研究输入信号和输出信号之间的逻辑关系,所以数字电路也称为___电路,最基本的逻辑关系是___、___和___逻辑关系,对应的电路称为___门、___门和___门。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】When I got there, the meeting _____ for ten minutes. [ ]
A.
has been on
B.
had begun
C.
had been on
D.
has begun
【单选题】The meeting _____ for ten minutes when I got there yesterday. A. has begun B.had begun C. has been on D. had been on
A.
has begun
B.
had begun
C.
has been on
D.
had been on
【简答题】中华人民共和国卫生行业标准中已确定:血清总蛋白和白蛋白 的参考区间分别为____和 ____。
相关题目：
参考解析：
知识点：
题目纠错 0
发布
