4. 如圖(二十三)所示之達靈頓(Darlington)組態電路，假設電晶體 \(Q_1\) 和 \(Q_2\) 的 \(\beta\) 值分別為 \(\beta_1\) 和 \(\beta_2\)，則正常工作時，\(I_{E2}=\)__(4)__\(I_{B1}\)。

IV、Teaching Activity Design（共20分）In recent years, students have increasingly relied on social media platforms (such as Threads andInstagram) to access and share information. However, when reposting, modifying, or sharing content, manystudents overlook important issues such as copyright, information credibility, and media ethics, indicatinga need to strengthen their media literacy. Design a 50-minute activity for 10th-grade students that aims toenhance their media literacy. Your design may include topics such as digital copyright, evaluatinginformation credibility, or responsible use of social media.Your answer should include:● detailed learning objectives● teaching procedures (pre-task, while-task, and post-task), durations and their purposes● the formative and summative assessments

4. 如圖(二十三)所示之達靈頓(Darlington)組態電路，假設電晶體 \(Q_1\) 和 \(Q_2\) 的 \(\beta\) 值分別為 \(\beta_1\) 和 \(\beta_2\)，則正常工作時，\(I_{E2}=\)(4)\(I_{B1}\)。

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