题干
Dogs have a very good_____ of smell and are often used to search for survivors in an earthquake.
A：view
B：mea
C：sense
D：idea
答案(点此获取答案解析）
C
2Z（g）＋W（s）△H<0，下图表示该反应的反应过程。若使a曲线变为b曲线，可采用的措施是