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更多“job n（）”相关的问题
A.select ename,job,sal from emp where sal in（select avg（sal） from emp group by deptno）
B.select ename,job,sal from emp where sal in（select min（sal） from emp order by deptno）
C.select ename,job,sal from emp where sal in（select min（sal） from emp group by deptno）
D.select ename,job,min（sal） from emp where sal group by deptno
A.Job是个静态的概念，被提交到系统开始执行时，该Job就拥有一个Instance
B.工作流描述了Job中各个Instance之间的依赖关系和运行约束，本质是个DAG(有向无环图)
C.单个SQLquery、命令或者MapReduce程序统称为一个Task
D.Instance是个动态概念，每个Instance只能运行一次
Which of the following statements is most important according to the passage？
A．Your job must suit your interest.
B．Your job must set a pattern of life.
C．Your job must offer you a high salary.
D．Your job must not ruin your talents.
It takes more energy to do a job in two minutes than__________ the same job in two hours．
A.to do
B.do
C.will do
D.is doing
