[单选题]
Which of the following is a fuj 5 vqg*ivr((7i8umm )of+ ajcndame +c *3wqn8kclvntal unit 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 kelvinxa)i-;vsn ya /-pytd a )he,,u+j9zj a, ampere, second, kilogram, metre, and mole and cand9)p,zaauj xvy,in;a y+ dj--)te/s a hela