悬浮液中加重质在重力场的沉降速度的倒数代表着该悬浮液的()。
A.密度
B.流变性
C.稳定性
D.沉降阻力
参考答案:C
应高度警惕胃癌的一项是()
A.慢性萎缩性胃炎
B.多年溃疡病出现腹痛规律改变伴消瘦
C.粪隐血试验阳性
D.胃溃疡
E.胃息肉
—This wall of air is an effective answer to the problem and it ______ work. —But it is a question to put such a wall of air around the statue.
A. may B. mustC. should D. could