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【单选题】
在如下两个数据库表中，若雇员信息表的主键是“雇员号”，部门信息表的主键是“部门号”。雇员信息表中的“部门号”是外键，它参照部门信息表中的“部门号”。若要删除部门信息表中的行，哪一行可以被删除? ( )。 雇员信息表A.
部门号='01'的行
B.
部门号='02'的行
C.
部门号＝'03'的行
D.
部门号='04'的行
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举一反三
【单选题】Which of the following is true about the persistence method?
A.
The method will work well if weather conditions change greatly from day to day.
B.
It is the simplest and the best way of producing a forecast.
C.
It is impossible to use the method because weather condition changes constantly.
D.
The root of the frequent failure of the method is the assumption on which it is based.
【单选题】Which method may involve historical weather data?
A.
The trends method.
B.
The analog method.
C.
Both climatology method and analog method.
D.
The trends method and the persistence method.
【单选题】Does the method he put forward______the problem make any sense?
A.
settle
B.
settling
C.
to settle
D.
settled
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