X6132型万能铣床主轴启动时,如果主轴不转,检查发动机()控制回路。 ["A、M1","B、M2","C、M3","D、M4"]
交流电压的量程有10V,(),500V,三档。用毕应将万能表的转换开关转到高电压档,以免下次使用不慎而损坏电表。 ["A、380V","B、250V","C、100V","D、220V"]
利血平具有() ["降压","抗肿瘤","抗菌","镇痛","平喘"]
如图所示,不计电压表的影响。开关接1时,电流表中流过的短路电流为()。 ["A、0A","B、10A","C、0.2A","D、约等于0.2A"]
检识二氢黄酮选用() ["四氢硼钠","盐酸镁粉","三氯化铝","锆盐-枸橼酸试液","三氯化铁"]
编制会积分录:村集体经济组织用公积公益金弥补上年亏损4500元。