题目内容
测得晶体管放大状态下三个电极的静态电流分别为 0.06mA,3.66mA 和 3.6mA 。则该管的β为（ ）
查看答案
搜索结果不匹配？点我反馈
更多问题
对 PNP 型晶体管来说，当其工作于放大状态时，（ ）极的电位最低。
Complete each short paragraph (1-6) with a word or words from the list below.•average•environment•lack•level•liquid•plants•release•trapped1. Millions of years ago, the amount of oxygen in the air was much higher than it is now. This is one reason why some of the __________ and insects alive at that time were bigger than they are now.
2. Some areas of the south have not had any rain for several months. The __________ of water has already killed crops, trees, and other plants.
3. Many people have been told that they should drink eight glasses of water each day on __________. However, plain water isn't the only __________ you can drink; tea, coffee, and other non-sugary drinks are also OK.
微信支付 
支付宝支付