题干
He proved himself a true gentleman and the beauty of his ________ was seen at its best when he worked with others.
A：advantage
B：appearance
C：qualification
D：character
答案(点此获取答案解析）
D
2XY(g) ΔH＜0达到甲平衡。在仅改变某一条件后，达到乙平衡，对此过程的分析正确的是( )
长繁殖，而乙和丙都不能；乙能在Ⅱ中正常生长繁殖，而甲和丙都不能。下列说法正确的是（ ）