【简答题】二极管导通时,二极管两端所加的是( )电压。(正向偏置/反向偏置/无偏置)
【单选题】本节课学习的藏族民间舞组合中膝部应保持的基本动律是:
【多选题】What shall we do if we observe students' reading behaviors?
A.
Listen in to their oral reading.
B.
Encourage them to talk about the reading.
C.
Ask them to raise their voice.
D.
Ask them to write about reading.
E.
Ask them to retell the text.
【多选题】What behaviors shall we observe if we listen to students' oral reading?
【单选题】向 CrCl 3 ·6H 2 O 溶液中加入 AgNO 3 ,经测定有 2/3 的氯被沉淀,据此推知溶液中存在的配离子是