你的性格类型倾向 T-F(假如T=F,则选择F)
A: T
B: F
A: T
B: F
举一反三
- 如果f (t) ←→F(ω) ,则下列说法正确的是( )。 A: F(t) ←→ 2πf(–ω) B: F(t) ←→ 2πf(ω) C: F(t) ←→ f (-ω) D: F(t) ←→ f(ω)
- 针对程序段:IP(A||B||C) THEN W=W/X,对于(A,B,C)的取值,(57)测试用例能够满足MCDC(修正条件逻辑判定)的要求。 A.(F,T,T)(T,F,T)(T,F,F)(T,T,F) B.(T,F,F)(T,T,F)(F,T,T)(F,F,F) C.(T,F,F)(T,T,F)(F,T,T)(F,F,T) D.(T,F,F)(F,T,F)(F,F,T)(F,F,F)
- 下述真值表表示的命题是。 Input Output p q r T T T T T T F F T F T T T F F T F T T T F T F T F F T T F F F T
- 【多选题】若f 1 (t) = ɛ (-t) , f 2 (t) = e t ,则f 1 (t)* f 2 (t) = A. f 1 ꞌ (t)* f 2 (–1) (t) B. f 1 (–1) (t)* f 2 ꞌ (t) C. f 1 (t-3)* f 2 (t+3) D. f 1 (–3) (t)* f 2 ꞌꞌꞌ (t)
- 下列等式不成立的是_____。 A: f(t)δ’(t)=f(0)δ’(t) B: f(t)δ(t)=f(0)δ(t) C: f(t)*δ’(t)=f ’(t) D: f(t)*δ(t)=f(t)