下图为流行性感冒流行过程的示意图甲同学患感冒打喷嚏时从鼻咽部喷出大量的飞沫悬浮于空气中�围抵抗能力不强的人吸入这样的空气后就有可能引起 Template




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tomski下图为流行性感冒流行过程的示意图甲同学患感冒打喷嚏时从鼻咽部喷出大量的飞沫悬浮于空气中�围抵抗能力不强的人吸入这样的空气后就有可能引起 coloring