六年级十一册第五单元阅读考试题目

应该是2,可是我本人觉得是3

GTO is will be composed by many GTO Yuan, each GTO Yuan characteristic not identically will be able to clear the process to have the very tremendous influence. If some GTO Yuan delay time compared to other GTO Yuan small, then triggers time this GTO Yuan first appears the anode current, the complete anode current flows this GTO Yuan possibly to cause its damage. In the anode current rise process, each GTO Yuan Daotong the area rate of expansion is different, also affects its current distribution the uniformity. Enhances to the gate extremely electric current peak-to-peak value and the pulse rise along steepness, is advantageous to reduces delay time td, causes all GTO Yuan td to tend to consistently, also can accelerate a GTO Yuan negative pole to lead passes the area the expansion, causes to clear in the process the GTO Yuan between dynamic electric current distribution to be evenGTO is will be composed by many GTO Yuan, each GTO Yuan characteristic not identic