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【单选题】
To write a summary effectively, you will need to______ words for phrases, phrases for sentences, and general sentences for lists of details.A.
replace
B.
distinguish
C.
substitute
D.
assemble
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举一反三
【简答题】要从 xs 表中删除字段 BJ 的命令是 Alter Table xs Drop ________ 。
【单选题】删除表xs中的索引xs_xh,可以使用命令
A.
delete index xs_xh
B.
drop index xs_xh on xs
C.
drop index xs_xh from xs
D.
alter table xs drop xs_xh
【简答题】要从xs表中删除字段“BJ”的命令是Alter Table xs Drop 。
【简答题】删除表XS的命令是
【单选题】Ms. Harrington noted that most Internet companies ______.
A.
are unwilling to clearly explain how they collect and use data
B.
are very creative in explaining what data they collect and use
C.
tend to use a visible method to explain what data they collect
D.
prefer to formulate lengthy and unintelligible privacy policies
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