题目

如图所示,欧姆表的刻度盘末使用时指针指A,短接时电流满偏指针指B，如表的总内阻为24Ω,C是AB弧的中点，D是AC弧的中点，E是AD弧的中点，则C点的刻度值是＿＿＿，D点的刻度值是＿＿，E点的刻度值是＿＿＿.  答案：24Ω;72Ω;168Ω.解析: -Mum, would you please drive ?--~No hurry. We have enough time before class begins.A. fastest B. faster C. more slowly D. more carefully