______the Radio Communications Directory, there are 16,376 licensed radio stations current
A.Due to
B.Taken by
C.Required by
D.According to
A.Due to
B.Taken by
C.Required by
D.According to
第1题
Which of the following is TRUE according to the passage?
A.Water is a barrier to radio communication.
B.Lasers have found wide application in submarine communication.
C.Water absorbs all kinds of electromagnetic waves.
D.Very low frequency radio waves cannot be used to contact submarines.
第2题
A.select nvl(COMM,0) from emp
B.select decode(COMM,0) from emp
C.select nullif(COMM,0) from emp
D.select decode(COMM,NULL,0) from emp
第4题
在Visual FoxPro 6.0中,要修改数据表TEST.dbt的结构,应用命令( )。
A.MODI STRU TEST B.MODI COMM TEST
C.EDIT STRU TEST D.TYPE TEST
第7题
He didn't describe the subject fully. He spoke ______.
A.in general
B.in particular
C.in common
D.in short
第9题
History in South Africa is now taught differently because ______.
A.of the collapse of communism.
B.of the collapse of rule by white people.
C.teachers are better than before.
第10题
A.CcmmonDialon1.ShowOpen
B.CommonDialog1.ShowSave
C.ComrnonDialog1.ShowColor
D.CommonDialog1.ShowFont
第11题
How does the woman describe 15th Street?
A.As having many fine stores
B.As an important commercial route
C.As having historical architecture
D.As providing access to many neighborhoods