大多数人会在一分多钟没有空气的环境中觉得恐慌，但是自由潜水员可以在不呼吸氧气的情况下，在水下屏息更长的时间。
Mostpeople panic after a little more than a minute without air, but freedivers—divers who don't use oxygen—can hold their breath for muchlonger.
目的：证明氧气雾化吸入器面罩吸氧的有效性，以便更好的向病人进行宣教，提高其利用效能。
Objective: to prove oxygen mask oxygen inhalation device effectiveness in order to better educate patients, and improve the effectiveness of its use.
比较加压阶段吸氧气与吸空气两种方法的高压氧治疗的优缺点。
To compare the advantage and disadvantage of two hyperbaric oxygen therapies when inspiring oxygen or inspiring air was used during compressed stage.
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