皮皮学，免费搜题
登录
搜题
【多选题】
下列各项中,中国专利法规定不授予专利权的是( )。A.
动物和植物新品种
B.
智力活动的规则和方法
C.
疾病的诊断和治疗方法
D.
科学发明
E.
疾病的诊断设备
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】A pulse is applied to each input of a 2-input NAND gate. One pulse goes HIGH at t=0 and goes back LOW at t=1ms. The other pulse goes HIGH at t=0.7ms and goes back LOW at t=3ms. The output pulse can b...
A.
It goes LOW at t=0 and back HIGH at t=3ms.
B.
It goes LOW at t=0.7ms and back HIGH at t=3ms.
C.
It goes LOW at t=0.7ms and back HIGH at t=1ms.
D.
It goes HIGH at t=0.7ms and back LOW at t=1ms.
【简答题】（）是开展公关活动时不可忽视的首要环节。
【单选题】A pulse is applied to each input of an exclusive-OR gate. One pulse goes HIGH at t=0 and goes back LOW at t=I ms.The other pulse goes HIGH at t=0.8 ms and goes back LOW at t=3 ms.The output pulse can ...
A.
It goes HIGH at t=0 and back LOW at t=3 ms.
B.
It goes HIGH at t=0 and back LOW at t=0.8 ms.
C.
It goes HIGH at t=1 ms and back LOW at t=3 ms.
D.
both answers(b)and(c)
相关题目：