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【单选题】
关于在适当的细节层面定义概念类，下面描述不正确的是 （ ）。A.
当发现一个类非常复杂时，要考虑拆分成多个小一点的类
B.
不能有太多的类
C.
与所要解决的问题领域有关系
D.
在实现时由程序员决定每个定义多少个方法
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【单选题】听力原文：M: I heard the Mongolian restaurant in the Palace building has really good food. Why don't we take Jimmy there for lunch today? It' s his first week on the job here. W: That' s a nice idea, but I...
A.
Guidelines for a budget report
B.
Preparation for the trip
C.
An invitation to lunch
D.
A review of the new restaurant
【简答题】设有一个 xs 表,该表有一个名为 jl 的字段,若要将该字段删除,可使用命令 Alter Table xs 。
【单选题】【D5】 STEVE: FRANCESCA, WHAT' S YOUR FAVOURITE PIECE OF MUSIC, WOULD YOU SAY ? FRANCESCA: I THINK IT' S 'PIE JESU' BY ANDREW LLOYD-WEBBER. STEVE: REALLY? FRANCESCA: 【D5】______ STEVE:WHEN DID YOU FIRST ...
A.
UR N...ABOUT 1953. I THINK,WHEN I WAS EIGHTEE N.
B.
WHAT ABOUT YOU?
C.
YEAH, I REALLY LIKE THAT.
D.
ACTUALLY, I DON'T LIKE IT THAT MUC H.
【单选题】有一学生表文件，且通过表设计器已经为该表建立了若干普通索引。其中一个索引的索引表达式为“姓名”字段，索引名为XM。现假设学生表已经打开，且处于当前工作区中，那么可以将上述索引设置为当前索引的命令是( )。
A.
SET INDEX TO 姓名
B.
SET INDEX TO XM
C.
SET ORDER TO 姓名
D.
SET ORDER TO XM
【简答题】设有一个表CJDA,该表有一个字段名为BY的字段。如果要将字段删除,可以使用命令ALTER TABLE cjda_____________。
【单选题】【D7】 STEVE: FRANCESCA, WHAT' S YOUR FAVOURITE PIECE OF MUSIC, WOULD YOU SAY ? FRANCESCA: I THINK IT' S 'PIE JESU' BY ANDREW LLOYD-WEBBER. STEVE: REALLY? FRANCESCA: 【D5】______ STEVE:WHEN DID YOU FIRST ...
A.
UR N...ABOUT 1953. I THINK,WHEN I WAS EIGHTEE N.
B.
WHAT ABOUT YOU?
C.
YEAH, I REALLY LIKE THAT.
D.
ACTUALLY, I DON'T LIKE IT THAT MUC H.
【简答题】构件自重均不计,则二力杆是 。
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