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Everyone would like to be remembered. A few people even try to do something that no one else in history has ever tried to do. These people sometimes have their names recorded in the Guinness Book of Records. Often it takes a group of people to do something unusual. One such team paddled(用浆划)a bathtub（浴缸）145 kilometers for 24 hours. This group had 13 members. They paddled their bathtub on a river near Ashford, Great Britain on May 28 and 29, 1983. A month later, a racing team of hospital bed pushers in Avon ,Great Britain, pushed a hospital bed 16 kilometers in just 50 minutes! However, the distance record for hospital bed pushing is still held by the men of Brunt field Bedding Center. This team from Edinburgh pushed a hospital bed 5,203 kilometers in 1979. It took the team 35 days to cover the distance. Another group of record makers held the highest dinner party in the world. Nine people from Sydney, Australia, climbed Mountain Huascaran on June 28 1989.The climbers carried a dinner table, chairs, and a meal up the mountain .When they reached the top, they all put on warm suits for dinner. People all over the world are trying hard to do something unusual to make a record. It should be understood; however, that now not all the records will be kept in the Guinness Book of Records. 小题1:According to the passage, what record was made near Ashford in May, 1983? A．A record for paddling a bathtub. B．A record for climbing a mountain. C．A record for pushing a hospital bed. D．A record for swimming across a river. 小题2:What was unusual about the highest dinner party held by the nine people in the passage? A．The people who held the dinner party all came from Sydney. B．Only nine people held the highest dinner party. C．They had a meal on the mountain. D．They carried a dinner table and chairs up the mountain to hold the dinner party. 小题3:Which of the following show the right order(顺序)of what happened in the passage? a. A group of 13 members paddled a bathtub on a river near Ashford. b. A team from Edinburgh made a distance record for hospital bed pushing. c. A group of nine people from Sydney had a dinner party on the top of Mountain Huascaran. d. A racing team pushed a hospital bed 16 kilometers in just 50 minutes in Avon. A．a-b-c-d B．d-b-c-a C．a-d-b-c D．b-a-d-c 小题4:Which of the following is mentioned(提及)in the passage? A．Hospital bed pushing was a popular sport in Edinburgh. B．People living in Ashford usually used a bathtub to carry things. C．Two different records for hospital bed pushing were given. D．Hospital bed pushing was held twice a year in Avon, Great Britain.
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【单选题】学生选课信息表SC(sno,cno,grade),主码(sno,cno),从学生选课信息表中找出无成绩的元组的SQL语句是( )
A.
Select * from SC where grade=null
B.
Select * from SC where grade IS ‘’
C.
Select * from SC where grade=’’
D.
Select * from SC where grade is null
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【单选题】设SC表中记录成绩的列为：Grade，类型为int。若在查询成绩时，希望将成绩按‘优’、‘良’、‘中’、‘及格’和‘不及格’形式显示，正确的 Case表达式是( )。
A.
Case Grade When 90~100 THEN ' 优' When 80~89 THEN ' 良' When 70~79 THEN ' 中' When 60~69 THEN ' 及格' Else ' 不及格' 1.End
B.
Case When Grade between 90 and 100 THEN Grade = ' 优' When Grade between 80 and 89 THEN Grade = ' 良' When Grade between 70 and 79 THEN Grade = ' 中' When Grade between 60 and 69 THEN Grade = ' 及格' Else Grade = ' 不及格' 1.End
C.
Case When Grade between 90 and 100 THEN ' 优' When Grade between 80 and 89 THEN ' 良' When Grade between 70 and 79 THEN ' 中' When Grade between 60 and 69 THEN ' 及格' Else ' 不及格' End
D.
Case Grade When 90~100 THEN Grade = ' 优' When 80~89 THEN Grade = ' 良' When 70~79 THEN Grade = ' 中' When 60~69 THEN Grade = ' 及格' Else Grade = ' 不及格' End
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【单选题】关于切口平移法下述不正确的是
A.
可标记线性DNA
B.
可标记松散螺旋DNA
C.
可标记超螺旋DNA
D.
可标记存在缺口的双链DNA
E.
可标记随机引物
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【单选题】在用切口平移方法标记DNA聚合酶I是
A.
大肠杆菌DNA聚合酶I（全酶）
B.
大肠杆菌DNA聚合酶I的Klenow片段
C.
T7噬菌体DNA聚合酶
D.
T4噬菌体DNA聚合酶
E.
TaqDNA聚合酶
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【单选题】有如下“成绩表”数据,其中Sno为学号，Grade为成绩：Sno Grade0301001 980301102 900302001 780302002 860302003 880302003 600302001 78已定义函数如下：CREATE FUNCTION Grade(@Sno VARCHAR( 30 ))RETURNS TABLEAS RETURN (SELECT Grade FROM 成...
A.
Sno        Grade 0302003    88 0302003    60
B.
Sno        Grade 0302003    88
C.
Sno 0302003 0302003
D.
Grade 88 60
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【单选题】切口平移法脱氧核苷酸探针标记方法，使用的酶为（）
A.
大肠埃希菌DNA聚合酶Ⅱ
B.
大肠埃希菌RNA聚合酶
C.
T4噬菌体DNA内切酶
D.
大肠埃希菌DNA聚合酶Ⅰ
E.
大肠埃希菌DNA聚合酶Ⅲ
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【单选题】学生选课信息表SC(sno,cno,grade),主码为(sno,cno),从学生选课信息表中找出无成绩的元组的SQL语句是( )。
A.
SELECT * FROM sc WHERE grade=NULL
B.
SELECT * FROM sc WHERE grade IS ‘‘
C.
SELECT * FROM sc WHERE grade=‘‘
D.
SELECT * FROM sc WHERE grade is NULL
查看完整题目与答案
【单选题】切口平移法脱氧核苷酸探针标记方法，使用的酶为
A.
大肠埃希菌DNA聚合酶Ⅱ
B.
大肠埃希菌RNA聚合酶
C.
T4噬菌体DNA内切酶
D.
大肠埃希菌DNA聚合酶I
E.
大肠埃希菌DNA聚合酶Ⅲ
查看完整题目与答案
【单选题】对于学生信息表：student(sno，sname，sex，age，grade)，查询学习成绩为空的学生的学号和姓名，下面语句正确的是
A.
SELECT sno，sname FROM student WHERE grade=NULL
B.
SELECT sno，sname FROM student WHERE grade IS NULL
C.
SELECT sno，age FROM student WHERE grade IS NULL
D.
SELECT sno，age FROM student WHERE grade=NULL
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【判断题】从2018年10月开始,敦煌网上传产品,必须填写品牌属性这个维度了。
A.
正确
B.
错误
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相关题目：
【单选题】学生选课信息表SC(sno,cno,grade),主码(sno,cno),从学生选课信息表中找出无成绩的元组的SQL语句是( )
A.
Select * from SC where grade=null
B.
Select * from SC where grade IS ‘’
C.
Select * from SC where grade=’’
D.
Select * from SC where grade is null
查看完整题目与答案
【单选题】设SC表中记录成绩的列为：Grade，类型为int。若在查询成绩时，希望将成绩按‘优’、‘良’、‘中’、‘及格’和‘不及格’形式显示，正确的 Case表达式是( )。
A.
Case Grade When 90~100 THEN ' 优' When 80~89 THEN ' 良' When 70~79 THEN ' 中' When 60~69 THEN ' 及格' Else ' 不及格' 1.End
B.
Case When Grade between 90 and 100 THEN Grade = ' 优' When Grade between 80 and 89 THEN Grade = ' 良' When Grade between 70 and 79 THEN Grade = ' 中' When Grade between 60 and 69 THEN Grade = ' 及格' Else Grade = ' 不及格' 1.End
C.
Case When Grade between 90 and 100 THEN ' 优' When Grade between 80 and 89 THEN ' 良' When Grade between 70 and 79 THEN ' 中' When Grade between 60 and 69 THEN ' 及格' Else ' 不及格' End
D.
Case Grade When 90~100 THEN Grade = ' 优' When 80~89 THEN Grade = ' 良' When 70~79 THEN Grade = ' 中' When 60~69 THEN Grade = ' 及格' Else Grade = ' 不及格' End
查看完整题目与答案
【单选题】关于切口平移法下述不正确的是
A.
可标记线性DNA
B.
可标记松散螺旋DNA
C.
可标记超螺旋DNA
D.
可标记存在缺口的双链DNA
E.
可标记随机引物
查看完整题目与答案
【单选题】在用切口平移方法标记DNA聚合酶I是
A.
大肠杆菌DNA聚合酶I（全酶）
B.
大肠杆菌DNA聚合酶I的Klenow片段
C.
T7噬菌体DNA聚合酶
D.
T4噬菌体DNA聚合酶
E.
TaqDNA聚合酶
查看完整题目与答案
【单选题】有如下“成绩表”数据,其中Sno为学号，Grade为成绩：Sno Grade0301001 980301102 900302001 780302002 860302003 880302003 600302001 78已定义函数如下：CREATE FUNCTION Grade(@Sno VARCHAR( 30 ))RETURNS TABLEAS RETURN (SELECT Grade FROM 成...
A.
Sno        Grade 0302003    88 0302003    60
B.
Sno        Grade 0302003    88
C.
Sno 0302003 0302003
D.
Grade 88 60
查看完整题目与答案
【单选题】切口平移法脱氧核苷酸探针标记方法，使用的酶为（）
A.
大肠埃希菌DNA聚合酶Ⅱ
B.
大肠埃希菌RNA聚合酶
C.
T4噬菌体DNA内切酶
D.
大肠埃希菌DNA聚合酶Ⅰ
E.
大肠埃希菌DNA聚合酶Ⅲ
查看完整题目与答案
【单选题】学生选课信息表SC(sno,cno,grade),主码为(sno,cno),从学生选课信息表中找出无成绩的元组的SQL语句是( )。
A.
SELECT * FROM sc WHERE grade=NULL
B.
SELECT * FROM sc WHERE grade IS ‘‘
C.
SELECT * FROM sc WHERE grade=‘‘
D.
SELECT * FROM sc WHERE grade is NULL
查看完整题目与答案
【单选题】切口平移法脱氧核苷酸探针标记方法，使用的酶为
A.
大肠埃希菌DNA聚合酶Ⅱ
B.
大肠埃希菌RNA聚合酶
C.
T4噬菌体DNA内切酶
D.
大肠埃希菌DNA聚合酶I
E.
大肠埃希菌DNA聚合酶Ⅲ
查看完整题目与答案
【单选题】对于学生信息表：student(sno，sname，sex，age，grade)，查询学习成绩为空的学生的学号和姓名，下面语句正确的是
A.
SELECT sno，sname FROM student WHERE grade=NULL
B.
SELECT sno，sname FROM student WHERE grade IS NULL
C.
SELECT sno，age FROM student WHERE grade IS NULL
D.
SELECT sno，age FROM student WHERE grade=NULL
查看完整题目与答案
【判断题】从2018年10月开始,敦煌网上传产品,必须填写品牌属性这个维度了。
A.
正确
B.
错误
查看完整题目与答案
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