丰田汽车公司双VVT-i智能可变气门正时系统，在凸轮轴正时机油控制阀的控制下，可在进／排气凸轮轴上的气门正时提前和滞后液压油路中传递机油压力，使VVT-i控制器的（）沿圆周方向旋转，连续改变进／排气门正时。 ["固定在进／排气凸轮轴上的叶片","与从动正时链轮一体的壳体","固定在进／排气曲轮轴上的叶片和与从动正时链轮一体的壳体"]
（）是金融机构凭借其信用向公众发行的、承诺到期还本付息的一种债权债务凭证。 ["国债","企业债券","金融债券","政府债券"]
管理心理学面临的挑战包括（）。 ["经济全球化","新型的雇佣关系","团队化","商业理论的变化"]
在鼓风机后的焦炉煤气系统，应设泄爆装置，设自动的连续式氧含量分析仪，煤气含氧量达（）时报警，达（）时切断电源。 ["0.6%，1%","1%，2%","2%，5%"]
You have a file server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2).You need to implement a backup schedule on Server1 to meet the following requirements:·Everyday, back up all files and folders to disk.·Every Friday, back up all files and folders to tape.·Every Sunday, Tuesday, and Thursday, back up only the files and folders that have changed since theprevious Friday’s backup to tape.Which backup jobs should you create?（） [" ·a normal backup to disk everyday ·a normal backup to tape on Friday ·a differential backup to tape on Sunday, Tuesday, and Thursday"," ·a normal backup to disk everyday ·a normal backup to tape on Friday ·an incremental backup to tape on Sunday, Tuesday, and Thursday"," ·a copy backup to disk everyday ·a normal backup to tape on Friday ·a differential backup to tape on Sunday, Tuesday and, Thursday"," ·a copy backup to disk everyday ·a normal backup to tape on Friday ·an incremental backup to tape on Sunday, Tuesday and, Thursday"]
举例说明酶生物合成调节机制在酶发酵过程优化中的指导意义
