Q25 – Which proposal is correct?
A: 1- ESX-1-deficient and -proficient mycobacteria impact in a similar manner the host immune system
B: 2- Genetic engineering of ESX-1 secretion system in new live-attenuated vaccine candidates is feasible
C: 3- The host adaptive immunity is tolerized against ESX-1-associated antigens
A: 1- ESX-1-deficient and -proficient mycobacteria impact in a similar manner the host immune system
B: 2- Genetic engineering of ESX-1 secretion system in new live-attenuated vaccine candidates is feasible
C: 3- The host adaptive immunity is tolerized against ESX-1-associated antigens
举一反三
- ζ1,ζ2,ζ3是AX=0的一个基础解系,α1,α2,α3也是AX=0的一个基础解系()。 A: α1=ζ1-ζ2,α2=ζ2-ζ3,α33=ζ3-ζ1 B: α1=ζ1+ζ2,α2=ζ2+ζ3,α33=ζ3+ζ1 C: α1=ζ1-ζ2,α2=2ζ2,α33=ζ2-ζ1 D: α1=2ζ1-ζ2-ζ3,α2=ζ2-ζ1,α33=ζ3-ζ1
- The innate _____ system is a universal and ancient form of host<br/>defense against infection.() A: sensitive B: horizontal C: optimal D: immune
- 已知向量组α1,α2,α3线性无关,则下列向量组中线性无关的是______。 A: α1+2α2,2α2+α3,α3-α1 B: α1-2α2,α2-α3,2α3-α1 C: 2α1-α2,α2+2α3,α3-α1 D: α1-α2,α2+2α3,2α3+α1
- 设n维向量组α1,α2,α3线性无关,则正确的结论是()。 A: β1=α1-α2-α3,β2=α1+α2-α3,β3=-α1+α2+α3,向量组β1,β2,β3线性无关 B: β1=α1-α2+α3,β2=α2-α3,β3=α3-α1,向量组β1,β2,β3线性相关 C: β1=α1+α2,β2=α2-α3,β3=α3+α1,向量组β1,β2,β3线性无关 D: β1=α1-α2+α3,β2=-α1+α3,β3=-α1+2α2+α3,向量组β1,β2,β3线
- 已知向量组(Ⅰ)α1,α2,α3,α4线性无关,则与(Ⅰ)等价的向量组是 ( ) A: α1+α2,α2+α3,α3+α4,α4+α1 B: α1-α2,α2-α3,α3-α4,α4-α1 C: α1+α2,α2-α3,α3+α4,α4-α1 D: α1+α2,α2-α3,α3-α4,α4-α1