[单选]A . R=2.33ΩB . R=4.33ΩC . R=6.33ΩD . R=8.33&Omega [单选]A . R=2.33ΩB . R=4.33ΩC . R=6.33ΩD . R=8.33&Omega 发布时间:2025-10-11 19:13:15