咳嗽伴哮喘的是（）
A.肺脓肿
B.胸膜炎
C.气管异物
D.急性咽炎
E.大片肺不张
参考答案：C
If a company using last-in first-out (LIFO) reports an inventory balance of $ 25000 and a LIFO reserve of $ 5000, the estimated value for the inventory on a first-in first-out (FIFO) basis would be :
A．
B．
C．
安全触板（光电保护）装置的位置与作用？
