女性,20岁。行切开法重睑术后2个月,双侧上睑窝凹陷明显,其可能的原因是()
A.感染
B.血肿机化
C.上睑眶隔脂肪去除过多
D.提上睑肌被切断
E.上睑皮肤缝合错位
参考答案:C
______ is reported in the newspapers, the war in Libya has come to an end. [ ]
A. It
B. What
C. That
D. As
粘性流体总水头线沿程的变化是:()。
A.沿程下降
B.沿程上升
C.保持水平
D.前三种情况都有可能