A.將“L”端和“E”端開路,搖動(dòng)手柄,指針應(yīng)指向“∞” B.將“L”端和“E”端開路,搖動(dòng)手柄,指針應(yīng)指向“0” C.將“L”端和“E”端短接,搖動(dòng)手柄,指針應(yīng)指向“∞” D.將“L”端和“E”端短接,搖動(dòng)手柄,指針應(yīng)指向“0”