Si-Ma Tan(司马谈), father of Si-Ma Qian (司马迁), classified these “hundred schools” first()
稳压管的稳压区是其工作在 状态()
A. 正向导通
B. 反向截止
C. 反向击穿
D. 空白
三级管工作在放大区,要求()
A. 发射结正偏,集电结正偏
B. 发射结正偏,集电结反偏
C. 发射结反偏,集电结正偏
D. 发射结反偏,集电结反偏
_is the first nation to manufacture true porcelain in the world and has been recognized as “the home of porcelain”()
A. Japan
B. France
China
D. Greece