表达式60+19div2的值是() ["67","79","69","80"]
天然气发生泄漏时,一般首先要() ["关闭阀门","隔离人员","切断气源","设置安全区"]
When importing a table into a database,the import process performs these tasks: 1. Triggers are imported. 2. Data is imported. 3. New tables are created. 4. Indexes are built. 5. Any bitmap, functional, and/or domain indexes are built. 6. Integrity constraints are enabled on the new tables. Which option shows the tasks in the order in which they are performed?() ["2,3,4,1,6,5","3,2,4,1,6,5","3,2,6,4,1,5","4,2,3,1,5,6"]
下列说法不正确的是() ["文化的传播与渗透是文化在横向上的运动形式","文化的的积累和传递时文化系统运动的基本形式之一","文化虽是社会的子系统,但仍具有相对的依赖性","文化融合是不同文化在相互接触和相互影响后所产生的"]
真正代表40年代话剧艺术水平的作品,是以现实生活为题材的曹禺的《北京人》和()的《法西斯细菌》。
脱乙烷塔底温度偏低将可能对操作产生什么影响?