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【简答题】
（10分）现有A、B、C、D四种短周期主族元素，其原子序数依次增大，已知A、C位于同一主族，A元素在元素周期表中原子半径最小，B、D原子最外层电子数相等，且B、D原子序数之和是A、C原子序数之和的两倍。 （1）请在如图塔式元素周期表（元素周期表的另一种画法）相应位置中标出A、B、C、D四种元素的元素符号。 （2）图中将过渡元素。 （3）由上述四种元素中的某几种所形成的具有漂白作用物质的化学式（写出两种）:_______、______。
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【多选题】CDP is being used throughout the Ezonexam network. What are two reasons why the Ezonexam network administrator would use CDP? (Choose two)
A.
To determine the status of network services on a remote device
B.
To obtain the IP Address of a connected device in order to telnet to the device
C.
To verify the type of cable interconnecting two devices
D.
To verify Layer 2 connectivity between two devices when Layer 3 fails
E.
To obtain VLAN information from directly connected swticehs
F.
To determine the status of the routing protocols between directly connected routers
G.
To support automatic network failover during outages
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【单选题】只用白矾炮制的半夏是 ( )
A.
生半夏
B.
清半夏
C.
姜半夏
D.
法半夏
E.
半夏曲
查看完整题目与答案
【多选题】What are two reasons to create synonyms? （）
A.
You have too many tables.
B.
Your tables are too long.
C.
Your tables have difficult names.
D.
You want to work on your own tables.
E.
You want to use another schema's tables.
F.
You have too many columns in your tables.
查看完整题目与答案
【简答题】查询选修课程号为c05109号课程的期末最高分、最低分及之间相差的分数,可用如下SQL语句: SELECT ______(final) AS MaxScore, ______(final) AS MinScore, ______ AS Diff FROM score ______ courseno = 'c05109'
查看完整题目与答案
【简答题】查询选修课程号为c05109号课程的期末最高分、最低分及之间相差的分数,可用如下SQL语句: SELECT ______(final) AS MaxScore, ______(final) AS MinScore, ______ AS Diff FROM score where courseno = 'c05109'
查看完整题目与答案
【多选题】What are two reasons a network administrator would use CDP (Choose two.)（）。
A.
to verify the type of cable interconnecting two devices
B.
to determine the status of network services on a remote device
C.
to obtain VLAN information from directly connected switches
D.
to verify Layer 2 connectivity between two devices when Layer 3 fails
E.
to obtain the IP address of a connected device in order to telnet to the device
F.
to determine the status of the routing protocols between directly connected routers
查看完整题目与答案
【简答题】查询选修课程号为c05109 的学生学号和期末成绩,并且要求平时成绩在80到95之间。
查看完整题目与答案
【简答题】查询选修课程号为 c05109 的学生学号、平时成绩和期末成绩,并且要求平时成绩在 80 到 90 之间。
查看完整题目与答案
【单选题】只用白矾作辅料炮制的半夏炮制品是：
A.
生半夏
B.
清半夏
C.
法半夏
D.
姜半夏
E.
半夏曲
查看完整题目与答案
【多选题】炮制方法不同的半夏称为
A.
晒干称清半夏
B.
生姜白矾制称为姜半夏
C.
白矾石灰等制称为法半夏
D.
发酵成曲称为半夏曲
E.
研粉发酵成曲称为半夏曲
查看完整题目与答案
相关题目：
【多选题】CDP is being used throughout the Ezonexam network. What are two reasons why the Ezonexam network administrator would use CDP? (Choose two)
A.
To determine the status of network services on a remote device
B.
To obtain the IP Address of a connected device in order to telnet to the device
C.
To verify the type of cable interconnecting two devices
D.
To verify Layer 2 connectivity between two devices when Layer 3 fails
E.
To obtain VLAN information from directly connected swticehs
F.
To determine the status of the routing protocols between directly connected routers
G.
To support automatic network failover during outages
查看完整题目与答案
【单选题】只用白矾炮制的半夏是 ( )
A.
生半夏
B.
清半夏
C.
姜半夏
D.
法半夏
E.
半夏曲
查看完整题目与答案
【多选题】What are two reasons to create synonyms? （）
A.
You have too many tables.
B.
Your tables are too long.
C.
Your tables have difficult names.
D.
You want to work on your own tables.
E.
You want to use another schema's tables.
F.
You have too many columns in your tables.
查看完整题目与答案
【简答题】查询选修课程号为c05109号课程的期末最高分、最低分及之间相差的分数,可用如下SQL语句: SELECT ______(final) AS MaxScore, ______(final) AS MinScore, ______ AS Diff FROM score ______ courseno = 'c05109'
查看完整题目与答案
【简答题】查询选修课程号为c05109号课程的期末最高分、最低分及之间相差的分数,可用如下SQL语句: SELECT ______(final) AS MaxScore, ______(final) AS MinScore, ______ AS Diff FROM score where courseno = 'c05109'
查看完整题目与答案
【多选题】What are two reasons a network administrator would use CDP (Choose two.)（）。
A.
to verify the type of cable interconnecting two devices
B.
to determine the status of network services on a remote device
C.
to obtain VLAN information from directly connected switches
D.
to verify Layer 2 connectivity between two devices when Layer 3 fails
E.
to obtain the IP address of a connected device in order to telnet to the device
F.
to determine the status of the routing protocols between directly connected routers
查看完整题目与答案
【简答题】查询选修课程号为c05109 的学生学号和期末成绩,并且要求平时成绩在80到95之间。
查看完整题目与答案
【简答题】查询选修课程号为 c05109 的学生学号、平时成绩和期末成绩,并且要求平时成绩在 80 到 90 之间。
查看完整题目与答案
【单选题】只用白矾作辅料炮制的半夏炮制品是：
A.
生半夏
B.
清半夏
C.
法半夏
D.
姜半夏
E.
半夏曲
查看完整题目与答案
【多选题】炮制方法不同的半夏称为
A.
晒干称清半夏
B.
生姜白矾制称为姜半夏
C.
白矾石灰等制称为法半夏
D.
发酵成曲称为半夏曲
E.
研粉发酵成曲称为半夏曲
查看完整题目与答案