眼球破裂伤虹膜脱出后进行切除的指征有()
A.虹膜脱出2小时
B.虹膜表面脓苔附着
C.虹膜色素大量脱失
D.虹膜萎缩
E.以上都是
参考答案:B, C, D
Very loud noises in the factory can ______ people mad.[ ]
A. make
B. have
C. cause
D. drive
吸附塔在初次充填物料时,床层充填速度要快,而封头充填速度要慢。()