[单选题]
Which of the following is a fundam ,;nxewmjb*j *ental unit in the SI mk5i s 8:hw1fjsystem?
A. kevin
B. volt
C. coulomb
D. joule
参考答案: A
本题详细解析: The fundamental units are kelvin, amp mbyeom5vop l dowvwxre7z7; .;.0;j )ere, second, kilogram, metre, and mole and canxml;e wo;or77mvv 0;ydw e5j .bop.)zdela