試卷名稱:113年 - 113 學士後醫學系招生考試:物理及化學#119747
年份:113年
科目:學士後西醫物理及化學
49. In the figure, a gas enclosed within a sealed chamber follows a closed path as illustrated. What is the total amount of work performed by the gas?
(A) +40 J
(B) +20 J
(C) 0 J
(D) -20 J
(E) -40 J