阿摩線上測驗
32. What's a rudimentary type of energy harvesting?
(A) To quickly rub two objects together.
(B) To change lithium-powered batteries.
(C) To use magnets and computer chips.
(D) To transform human motion.
答案：登入後查看
統計： A(0), B(0), C(0), D(2), E(0) #3360007
統計： A(0), B(0), C(0), D(2), E(0) #3360007
