此患者最可能的诊断是
A．支气管哮喘B．支气管扩张C．慢性支气管炎D．细菌性肺炎E．支气管内膜结核
参考答案：C
Not only do the two brothers look _______ but also they walk,talk and think____. Sometimes, it is
hard to tell them apart. [ ]
A. like;like
B. like;likely
C. alike;alike
D. like;alike
当量直径用于湍流流动情况下的阻力计算时结果（）。
A、偏大
B、偏小
C、比较准确
D、都有可能
