[单选题]
Which of the following is ahbei hd42 78blhetxvq82 6xw; fundamental uni /.i9te9vk yut 2l7nadt in the SI system?
A. kevin
B. volt
C. coulomb
D. joule
参考答案: A
本题详细解析: The fundamental units are kelvin, ampere, second, kilogram, metre,w: i1exucy)bs 42xpf h;q.x h7 and mole and candel: s4eqw y p hx;ch.x271)bufxia