单项选择题

以下能正确得到TTL噪声容限的等式是()。

A.UNH=UOHmin-UIHmax
B.UNH=UOHmax-UIHmin
C.UNL=UILmin-UOLmin
D.UNL=UILmax-UOLmax

你可能感兴趣的试题

The third paragraph tells us that______.
A．the concentration of CO2 rises during summer
B．the concentration of CO2 goes down during winter
C．the figure in the spring of 2015 will not reach 400 ppm
D．Pieter Tans is the man in charge of supervision at Mauna Loa

A.
A．the
B.the
C.the
D.Pieter

单项选择题

多动症在婴儿期，主要表现为不安宁、()、饮食情况差。

A.易激怒
B.易兴奋
C.睡眠少
D.睡得浅