The presence of communication barriers is most likely to lead to—
A.Reduced productivity
B.Increased hostility
C.Low morale
D.Increased conflict
E.Increased stress
第2题
A.select * from emp where comm=;
B.select * from emp where comm=null;
C.select * from emp where nvl(comm)=0;
D.select * from emp where comm is null;
第3题
A.SELECT ename, DECODE(comm, NULL, 0) FROM emp(;)
B.SELECT ename, NULL(comm, 0) FROM emp(;)
C.SELECT ename, NULLIF(comm, 0) FROM emp(;)
D.SELECT ename, NVL(comm, 0) FROM emp(;)
第4题
A.select * from emp where comm=‘‘;
B.select * from emp where comm=null;
C.select * from emp where nvl(comm)=0;
D.select * from emp where comm is null;
E.select * from emp where nvl(comm,0)=0;
第6题
A.机长工作于VHF COMM—1
B.副驾驶工作于VHF COMM—1
C.观察员工作于VHF COMM—2
D.无变化
第7题
B.select * from emp where comm =’’
C.select * from emp where comm=0
D.select * from emp where comm is null
第9题
A.Warnings - Cautions- Advisory- Memo
B.Warnings - Cautions - Comm high- Comm medium
C.Warnings - Cautions- Advisory- Comm high
D.都不对
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