A、<span style="font-size:14px;font-family:汉仪书宋二简">设法减小</span><em><span style="font-size:14px;font-family:'Times New Roman','serif'">α</span></em><sub><span style="font-size: 14px;font-family:'Times New Roman','serif'">1</span></sub>
B、<span style="font-size:14px;font-family:汉仪书宋二简">设法增大</span><em><span style="font-size:14px;font-family:'Times New Roman','serif'">α</span></em><sub><span style="font-size: 14px;font-family:'Times New Roman','serif'">2</span></sub>
C、<span style="font-size:14px;font-family:汉仪书宋二简">同时增大</span><em><span style="font-size:14px;font-family:'Times New Roman','serif'">α</span></em><sub><span style="font-size: 14px;font-family:'Times New Roman','serif'">1</span></sub><span style="font-size:14px;font-family:汉仪书宋二简">和</span><em><span style="font-size:14px;font-family:'Times New Roman','serif'">α</span></em><sub><span style="font-size: 14px;font-family:'Times New Roman','serif'">2</span></sub>
D、<span style="font-size:14px;font-family:汉仪书宋二简">设法增大</span><em><span style="font-size:14px;font-family:'Times New Roman','serif'">α</span></em><sub><span style="font-size: 14px;font-family:'Times New Roman','serif'">1</span></sub>
查看答案