比长式磷化氢气体检测管是一根两端密封的细长玻璃管，管内装有（）和保护层。
A、指示剂
B、磷化氢气体
C、试剂
D、溶液
参考答案：A
不属于尿蛋白定性方法的是（）。
A.磺基水杨酸-硫酸钠比浊法
B.试带法
C.加热乙酸法
D.磺基水杨酸法
E.邻甲苯胺法
It can be inferred from the passage that electric response audiometry would be especially recommended for_______.
A．a three-year-old girl who has an earache
B．an old man who cups his ear to ear
C．a young child who does not talk
D．a rock musician who plays the drums
