原油冷却到失去流动性时的温度称为()。
A.结蜡点
B.凝固点
C.溶蜡点
D.凝析点
参考答案:B
Professor Zhang handed out the textbooks to all the students, except _____ who had already taken them. [ ]
A. these
B. ones
C. the ones
D. the others
沙眼的特有体征包括()
A.角膜缘滤泡或Herbert小凹
B.典型的睑结膜瘢痕
C.睑结膜广泛 * * 增生
D.上睑结膜5个以上滤泡
E.沙眼性角膜血管翳