(2006年) 在附壁紊流中，黏性底层厚度δ比绝对粗糙高度△大得多的壁面称为( )。
A. 水力光滑面
B. 水力过渡粗糙面
C. 水力粗糙面
D. 以上答案均不对
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Questions 9 to 11 are based on the conversation you have just heard.
A. Their new assignment for next week.
B. Their creative writing professor.
C. A really strange book by some French guy.
D. A great English author.
(2006年)边界层分离不会( )。
A. 产生漩涡
B. 减少摩擦阻力
C. 产生压强阻力
D. 增加能量损失
Questions 16 to 18 are based on the passage you have just heard.
A. Some students showed an increased blood pressure.
B. It proved music can help soothe the patients.
C. Some students showed a bad concentration
D. It proved music can have a negative effect on our emotions.
患者，女性，25岁。自然分娩1周，突然大量阴道流血，检查发现子宫大而软，宫口松弛，阴道及宫口有血块堵塞，正确的处理措施是
A. 子宫切除
B. 行刮宫术，刮出物送病理检查以明确诊断
C. 开腹探查
D. 左侧卧位、吸氧
E. 子宫动脉结扎
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