Which two pairings match the application with the correct Cos value?()
A: CoS 0 = Best-Effort Data
B: CoS 1 = Best-Effort Data
C: CoS 3 = High Priority
D: CoS 4 = High Priority Data
E: CoS 5 = Voice Bearer
F: CoS 7 = Voice Bearer
A: CoS 0 = Best-Effort Data
B: CoS 1 = Best-Effort Data
C: CoS 3 = High Priority
D: CoS 4 = High Priority Data
E: CoS 5 = Voice Bearer
F: CoS 7 = Voice Bearer
举一反三
- 已知向量a=(2,2,1),则a的方向余弦为(). A: cosα=2/3,cosβ=2/3,cosγ=1/3 B: cosα=2/5,cosβ=2/5,cosγ=1/5
- 该二元阵的阵因子为( )(以观察方向与阵轴的夹角δ为自变量)。 A: F(δ)=|cos[π(cosδ-1)/4]| B: F(δ)=|cos[π(sinδ-1)/2]| C: F(δ)=|cos[π(cosδ-1)]| D: F(δ)=|cos[π(sinδ-1)/4]|
- 【计算题】已知sinα+cosα=1,求:(1)sinαcosα; (2)sin α-cos α; (3)sin α-cos α
- 将数学表达式Cos A: Cos(a+b+5*exp(2) B: Cos (a+ C: +5*exp(2 D: Cos(a+b +5*ln(2) E: Cos (a+ F: +5*ln(2)
- (4)$A$矢量的方向余弦(与三个坐标轴的夹角余弦)的大小是: A: $cos\alpha=3/\sqrt{14},cos\beta=-1/\sqrt{14},cos\gamma=3/\sqrt{14}$ B: $cos\alpha=4/\sqrt{14},cos\beta=-1/\sqrt{14},cos\gamma=3/\sqrt{14}$ C: $cos\alpha=2/\sqrt{14},cos\beta=-1/\sqrt{14},cos\gamma=3/\sqrt{14}$ D: $cos\alpha=3/\sqrt{14},cos\beta=9/\sqrt{14},cos\gamma=3/\sqrt{14}$