多项选择题
Based on the video of the third session, which of the following strategies are helpful for listening for cause and effect?
A、 Short-term memory.
B、 Prediction and brainstorming.
C、 Signal words.
D、 Visual presentations.
Based on the video of the third session, which of the following strategies are helpful for listening for cause and effect?
A、 Short-term memory.
B、 Prediction and brainstorming.
C、 Signal words.
D、 Visual presentations.
,
,AB为线性电位器,总长度为150mm,总电阻为
,C点为电刷位置。当输出电压
时,则位移
为([填空1])mm。（填写数字） 
