【多选题】光和物质相互作用的经典理论正确的有
A.
自发辐射过程采用 辐射阻尼谐振子 ,自发辐射衰减时间与阻尼系数成正比
B.
受激吸收和色散现象采用电场驱动力的 受迫谐振子 分析
C.
由于自发辐射的影响,增益或吸收谱线为 洛伦兹型
【简答题】About one hundred years ago many educated people learned and spoke French when they met people from other countries. Today most people speak English when they meet foreigners. 1 There are more people ...
【简答题】七选五 (每空2分) About one hundred years ago many educated people learned and spoke French when they met people from other countries. Today most people speak English when they meet foreigners. 1 There are m...
【单选题】在定额中4~8表示适用于( )的数字范围。
【单选题】Louise told us that the French Revolution came at the end of the Enlightenment , when people learned a lot of ideas. (synonym)
【单选题】During Shang Dynasty, people learned a lot except ________.
D.
how to use white pottery and glazed pottery technique
【简答题】评估现存企业的方法主要有( )。 A.市场价值评估法 B.经验评估法 C.盈利能力评估法 D.现金流量折现法 E.资产价值评估法