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单选题What is true about sequences?（）A Once created, a sequence belongs to a specific schema.B Once created, a sequence is linked to a specific table.C Once created, a sequence is automatically available to all users.D Only the DBA can control which sequence

题目
单选题
What is true about sequences?（）
A

Once created, a sequence belongs to a specific schema.

B

Once created, a sequence is linked to a specific table.

C

Once created, a sequence is automatically available to all users.

D

Only the DBA can control which sequence is used by a certain table.

E

Once created, a sequence is automatically used in all INSERT and UPDATE statements.

相似考题

1.Which is true about over－thinking? ()A、Men are far more inclined to ruminate about the stressors and disappointments they encounter.B、All ruminations are abnormal.C、Over-thinkers go over and over what happened in future.D、Both the brain and experience are the factors in overthinking.

2.What is true about prenups?A、They lay bare all one’s finances.B、It can sometimes save a couple from a terrible marriage.C、It sheds light on issues which could later widen and result in divorce.D、It is often signed on free will.

3.what do you know about “SOPEP”?what is VRP , and what is VCP ?

4.What is TRUE about the Irish Republic's economy?A．It was the most successful among the EU countries.B．It has increased 8% in the last five years.C．The unemployment rate has reached its lowest level for 5 years.D．The commodity prices have decreased greatly in the country.

参考答案和解析
正确答案： D
解析： 暂无解析
更多“What is true about sequences?（）”相关问题

  • 第1题：

    What is true about a Bypass Tunnel in MPLS Fast Reroute?()

    A. Only configured on the egress router

    B. Only configured on the ingress router

    C. Is pre-signalled to reduce packet loss

    D. Must intersect the primary LSP at two locations


    参考答案：D

  • 第2题：

    What is true about the Cisco SBR methodology?（）

    • A、provides an opportunity to build short-term consultative relationships with customers
    • B、provides an opportunity to build long-term consultative relationships with customers
    • C、provides an opportunity to build consultative relationships with customers
    • D、provides an opportunity to sell more products

    正确答案:B

  • 第3题：

    What statement about Transit AS is true？（）

    • A、Traffic and prefixes originating from Source AS are carried across a Transit AS to reach theirdestination AS
    • B、Traffic and prefixes originating from Transit AS are carried across a Stub AS to their destination AS
    • C、Traffic and prefixes originating from Transit AS are carried across a Stub AS to their Source AS
    • D、None of the above

    正确答案:A

  • 第4题：

    What is true about sequences? （）

    • A、The start value of the sequence is always 1.
    • B、A sequence always increments by 1.
    • C、The minimum value of an ascending sequence defaults to 1.
    • D、The maximum value of descending sequence defaults to 1.

    正确答案:A

  • 第5题：

    单选题
    What is the passage mainly about?
    A

    How to make a good advertisement?

    B

    What is a good advertisement?

    C

    Advertisements are not always true.

    D

    Consumers should have confidence in advertisements.


    正确答案： C
    解析：
    该篇文章指出当今广告中存在一些不真实的现象以及消费者应该怎样应付这些广告。由此可知选项C符合题意。

  • 第6题：

    单选题
    What is true about the parent children relationship?
    A

    Children should respect parents despite parents’ ill-treatment.

    B

    Parents without gratitude to children are not worth respect.

    C

    Parents should tolerate children’s occasional moodiness.

    D

    Children should be grateful to parents unconditionally.


    正确答案： A
    解析：
    根据最后一段第一句中的强调句“it is only parents who do their duty, who deserve this honorable treatment of their children”可知只有尽了责任的父母才值得孩子的尊敬。由本段中提到的先知p.b.u.h的例子也可以看出父母要想得到孩子的尊重，首先得尊重孩子，所以本题的正确答案为B。

  • 第7题：

    单选题
    What is true about sequences?（）
    A

    The start value of the sequence is always 1.

    B

    A sequence always increments by 1.

    C

    The minimum value of an ascending sequence defaults to 1.

    D

    The maximum value of descending sequence defaults to 1.


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    What is true about a Bypass Tunnel in MPLS Fast Reroute?（）
    A

    Only configured on the egress router

    B

    Only configured on the ingress router

    C

    Is pre-signalled to reduce packet loss

    D

    Must intersect the primary LSP at two locations


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    Static VLANs are being used on the Company network. What is true about static VLANs？（）
    A

    Devices use DHCP to request their VLAN.

    B

    Attached devices are unaware of any VLANs.

    C

    Devices are assigned to VLANs based on their MAC addresses.

    D

    Devices are in the same VLAN regardless of which port they attach to.


    正确答案： C
    解析： 暂无解析

  • 第10题：

    What would someone learn from this text?( )

    A．How to make a lot of money．

    B． How to write a book about business．

    C． What the book is about．

    D． What the writer"s family is like．


    正确答案：C
    C[解析]根据这篇文章可以了解整本书的目的和主旨，所以答案选C。

  • 第11题：

    What is true about a Bypass Tunnel in MPLS Fast Reroute?（）

    • A、Only configured on the egress router
    • B、Only configured on the ingress router
    • C、Is pre-signalled to reduce packet loss
    • D、Must intersect the primary LSP at two locations

    正确答案:D

  • 第12题：

    What statements are true regarding ICMP packets?（）

    • A、They acknowledge receipt of TCP segments.
    • B、They guarantee datagram delivery.
    • C、They can provide hosts with information about network problems.
    • D、They are encapsulated within IP datagrams.
    • E、They are encapsulated within UDP datagrams.

    正确答案:C,D

  • 第13题：

    What is true about sequences?（）

    • A、Once created, a sequence belongs to a specific schema.
    • B、Once created, a sequence is linked to a specific table.
    • C、Once created, a sequence is automatically available to all users.
    • D、Only the DBA can control which sequence is used by a certain table.
    • E、Once created, a sequence is automatically used in all INSERT and UPDATE statements.

    正确答案:A

  • 第14题：

    单选题
    What is true about SYN cookies？（）
    A

     All TCPoptions are supported， such as largewindows.

    B

     The server can have more than8 unique MSS values.

    C

     SYN cookies are not implemented as a method of defending against SYN floods.

    D

     SYN cookies are implemented as a method of defending against SYN floods.


    正确答案： B
    解析： 暂无解析

  • 第15题：

    单选题
    _____ you told me _____ true?
    A

    Is what; /

    B

    What; /

    C

    That; is

    D

    What about; is


    正确答案： D
    解析：
    句意为“你所告诉我的是真的吗？”。主句中缺主语，从句中缺宾语，what名词性从句在句子中充当主语。

  • 第16题：

    单选题
    What is true about employees paid wages by the hour?
    A

    They will get a week of paid vacation.

    B

    They will not work during the month of March.

    C

    They will help with the maintenance work.

    D

    They will not receive payment during the closure.


    正确答案： B
    解析：
    从第2段第1句take a week of unpaid leave during the scheduled maintenance,可看出钟点工在厨房设备改装的期间是没有工资的，故选D。

  • 第17题：

    单选题
    What is true about sequences? （）
    A

    Once created, a sequence belongs to a specific schema.

    B

    Once created, a sequence is linked to a specific table.

    C

    Once created, a sequence is automatically available to all users.

    D

    Only the DBA can control which sequence is used by a certain table.

    E

    Once created, a sequence is automatically used in all INSERT and UPDATE statements.


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    What can be inferred from the passage?
    A

    The housing market once crashed.

    B

    The investment market once crashed.

    C

    The housing market is about to crash.

    D

    The predictions of a housing crash have come true.


    正确答案： B
    解析：
    录音中提到“But earlier dire predictions of an impending housing crash in recent times haven’t come about. One reason a “crash” is unlikely is that the housing market is structured much differently from investment markets like stocks or commodities.”，由此可见早期预言在最近的时期房地产市场崩溃即将发生，但是这个可怕的预言没有实现。房地产市场不可能崩溃的其中一个原因是房地产市场的构成和像股票或商品期货的投资市场大不相同，由此可推测出投资市场曾经崩溃过，故选B。

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