【单选题】下列if语句(设int x,a,b;)中错误的是
【单选题】阻值不同的几个电阻并联后,等效电阻比任何一个电阻( )。
【多选题】When we are going to ask about somebody’s health, what can we say?
A.
Are you feeling all right?
B.
Why don’t you go and gee a doctor?
C.
You don’t look well. Are you OK?
【单选题】阻值不同的几个电阻并联后,其等效电阻值 。
【单选题】阻值不同的几个电阻并联后,其等效电阻值 。