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[音频]John 1 (Thomson, Simpson, Timpson) is an overseas student in China. He is from England. He studies Chinese in the university. And Lin is 2 (a first-year, a third-year, a fourth year) Chinese student at the university. The two young men met for the first time. They introduce themselves to each other with 3 (pleasure, pressure, politeness). John is doing his Chinese 4 (project, program, product) at the university. Lin is going to graduate a year later. He intends to further his study in the UK by working toward a 5 (bachelor's, master's, doctor's) degree. Both John and Lin are online. From now on they can also keep in 6 (reach, speech, touch) through the Internet and help each other at any time.
下列不属于超声雾化吸入器的特点的是( )
连续使用超声波雾化吸入时,雾化器水槽内的水温不宜超过( )
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