未知题型
A、I度B、浅Ⅱ度C、深Ⅱ度D、Ⅲ度正确答案：Ⅲ度
We want as many electrons as possible to reach the coll...
判断题We want as many electrons as possible to reach the collector without recombining with any majority carrier holes in the base. Therefore, the width of the base needs to be large compared with the minority carrier diffusion length. ()
伤及真皮深层，尚残留皮肤附件的烧伤深度是（）
未知题型伤及真皮深层，尚残留皮肤附件的烧伤深度是（）
浅Ⅱ度烧伤病人，形成水泡的特点是（）
未知题型浅Ⅱ度烧伤病人，形成水泡的特点是（）
