什么是容许信号控制?
电容器的投运与退出必须根据用户的无功潮流及()情况来决定。 ["有功功率","功率因数","无功功率","无功补偿"]
不属于采集标本原则的是下面哪项() ["护士遵医嘱采集标本","选择正确的采集方法","采集血液标本时要避免导致标本溶血的因素","采集细菌培养标本过程要严格遵守无菌操作技术,避免污染","不能及时送检的标本放科室保存"]
抽取血气分析标本后送检时问为() ["15min之内","20min之内","25min之内","30min之内","35min之内"]
网上银行企业注册客户管理员可以有()。 ["A.多个","B.1个","C.2个","D.3个"]
什么是调车控制方式?