【简答题】电路如图所示,其中R=R f 。 (1)这个电路的功能是什么? (2)试求输出电压的取值范围。 (3)若要求电路输入数字量为200H时,输出电压Uo=5V,那么UREF应取何值? (4)此电路的分辨率是多少?
【简答题】电路如下图所示,其中C为控制端,0信号均为0V,1信号均为V DD ,试用真值表表达电路的逻辑功能,并说明这是一个怎样的门电路。
【单选题】套类零件的配合孔,一般都有较高的()精度和较小的表面粗糙度要求。
【简答题】Henry Ford was the first person to build cars which were cheap,strong and fast.He was able to se11 millions of models because be could produce them in large numbers at a time;that is,he made a great m...
【单选题】套类零件的精度要求有尺寸精度、表面粗糙度、形状精度及()精度。
【简答题】Do you know Fei Junlong and Nie Haisheng? Fei Junlong was born in 1965. He is a Chinese astronaut selected(选拔)as a member of the Shenzhou program. He was born in Jiangsu and joined the People’s Liber...
【简答题】Henry Ford was the first person to build cars which were cheap,strong and fast.He was able to se11 millions of models because be could produce them in large numbers at a time;that is,he made a great m...
【判断题】套类零件作为配合的孔,一般都要求有较高的尺寸精度、较大的表面粗糙度和较高的形位精度。( )
【单选题】套类零件的加工特点,按精度要求而定。作为配合的孔,一般都有较高的()精度。