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【单选题】
为"教师"表的职工号字段添加有效性规则:职工号的最左边三位字符是110,正确的SQL语句是( )。A.
CHANGE TABLE 教师 ALTER 职工号 SET CHECK LEFT(职工号,3)="110"
B.
ALTER TABLE 教师 ALTER 职工号 SET CHECK LEFT(职工号,3)="110"
C.
ALTER TABLE 教师 ALTER 职工号 CHECK LEFT(职工号,3)="110"
D.
CHANGE TABLE 教师 ALTE R职工号 SET CHECK OCCURS(职工号,3)="110"
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举一反三
【单选题】It is now very common for people to ________ online their thanks to the volunteers.
A.
post
B.
take
C.
put
D.
set
【单选题】Different from a work group．
A.
a team includes a large group of people working together．
B.
members of a team are skilled employees．
C.
the Ieader of a team believes in team work．
D.
team members don't communicate with the leader．
【单选题】When will group A go to the distribution area?
A.
From 10:20A.M. to 10:30 A.M.
B.
From 10:30A.M. to 11:15 A.M.
C.
From 11:15 A.M. to 12:00 noon
D.
From 1:00 P.M. to 1:45 P.M.
【单选题】I'm sure our football team will ________the team from NO. 1 Middle School
A.
win
B.
fail
C.
lose
D.
beat
【单选题】I'm sure our football team will ________ the team from NO. Middle School.
A.
win
B.
fail
C.
lose
D.
beat
【单选题】I’m ______ captain of the class team at school and I’m also ______ member of the Senior High team.
A.
不填; a
B.
a; a
C.
the; the
D.
the; 不填
【简答题】The problem (discuss) ______ at the meeting now is very important for the development of our factory.
【简答题】为邮件合并提供变化的数据。 为邮件合并提供不变的内容。
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