支气管扩张的典型体征是______
A．杵状指 B．消瘦 C．贫血D．病变部位持续性湿啰音 E．病变区域叩浊
参考答案：D
—Where ____ our volleyball? Do you know?
—I think it's ____ the bed. [ ]
A. is, in
B. are, under
C. is, under
如果液环泵电机反转，应及时找电气人员处理。（）
