If the main power line fails, the hospital will use its___generator. A.residual B.subordinate C.obedient D.auxiliary 参考答案:D您的答案:未作答 答案解析:词义辨析。句意:主电力线路一旦出现故障,医院将使用辅助发电机发电。auxiliary辅助的;副的;附加的。auxiliary generator辅助发电机。residual剩余的;残...