8.以下氨基糖苷类抗生素中、拍毒性最大的药物是
A.新霉素 &nBsp; &nBsp; &nBsp; &nBsp; &nBsp; &nBsp; &nBsp; B.链霉素
C.妥布霉素 &nBsp; &nBsp; &nBsp; &nBsp; &nBsp; D.奈替米星
E.庆大霉素