若采用分压式偏置电路，通过反馈环节调节合适的（）电位，可达到改善输出波形的目的。
参考答案：基极
________ of his works were written in his _______. [ ]
A. One-third; fifties
B. One-third; fifty
C. One-thirds; fifties
隔离开关的检修项目有哪些？
