79. SARS-CoV-2 is a positive-sense single-stranded RNA virus. Which of the following components does   NOT   appear in virus particles in theory?
(A) Adenine
(B) Guanine
(C) Cytosine
(D) Thymine

答案:登入後查看
統計: A(0), B(0), C(0), D(4), E(0) #2769077