【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)
【简答题】3GPP组织最早提出的LTE标准不是真正的4G,严格意义上讲,LTE只是3.9G,尽管被宣传为4G无线标准,但它其实并未被3GPP认可为国际电信联盟所描述的下一代?无线通讯标准IMT-Advanced,只有升级版的_______才满足国际电信联盟对4G的要求。
【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