【简答题】Put one word in each space to complete the text.
【判断题】引入深度负反馈时,反馈放大电路的放大倍数由反馈系数决定。
【单选题】在普通股票分配股息之后才有权分配股息的股票是______。
【简答题】Complete the chart by scanning for information in the text.
【简答题】Complete the sentences from the text. agers are affected more by ______.