冬期预应力钢筋张拉环境温度控制的最小限值是（）℃。 ["-30","-20","-15","-5"]
Which object privileges can be granted on a view? （） [" none"," DELETE, INSERT,SELECT"," ALTER, DELETE, INSERT, SELECT"," DELETE, INSERT, SELECT, UPDATE"]
影响闸瓦产生制动力的因素主要有闸瓦材质、列车运行速度、闸瓦压强和（）。 ["轨道状态","踏面状态","闸瓦重量","制动初速"]
国家电网公司对风电场的低电压穿越的基本要求是什么？
Which of the following restrictions are not true with respect to tablespace point-in-time recovery？（） [" The target database must be in NOARCHIVELOG mode."," No backup is required of the database before you perform a TSPITR."," You must have all archived redo logs generated since the last backup up to the point to which you want to restore the transport set."," If you rename a tablespace， you can not perform a TSPITR to any point in time before that rename operation occurred."," If you have tables in tablespace_1 that have associated constraints in tablespace_2，then you must transport both tablespaces."]
周卫报告中指出：“课程改革实施――（）可以引导教师一步步走进新课程。”
