Which statement concerning GPS is TRUE ________．A.It cannot be used in all parts of the worldB.There are 12 functioning GPS satellites at presentC.It may be suspended without warningD.Two position lines are used to give a 2D fix

题目

Which statement concerning GPS is TRUE ________．

A.It cannot be used in all parts of the world

B.There are 12 functioning GPS satellites at present

C.It may be suspended without warning

D.Two position lines are used to give a 2D fix

相似考题

1.Evaluate the following SQL statement used to create the PRODUCTS table:Which statement is true regarding this command?()A. It executes successfully but partition pruning cannot happen for this partition key.B. It produces an error because the TOTAL_VALUE column cannot be used as a partition key.C. It produces an error because compression cannot be used for the TOTAL_VALUE partition key.D. It executes successfully but the values in the TOTAL_VALUE column would not be physically stored in the partitions.

2.Which of the following is true of an index used to support a UNIQUE constraint?()A.It must have the UNIQUE attribute.B.It cannot be created explicitly by the user.C.It must have the UNIQUE and CLUSTER attributes.D.It must have the UNIQUE WHERE NOT NULL attribute.

3.Which statement is TRUE concerning equatorial tides ________．A.They occur when the Sun is at minimum declination north or southB.They occur when the Moon is at maximum declination north or southC.The difference in height between consecutive high or low tides is at a minimumD.They are used as the basis for the vulgar establishment of the port

4.Which statement is true about FLUSH LOGS command?()A.It requires the RELOAD, FILE, and DROP privilegesB.It closes and reopens all log filesC.It closes and sends binary log files to slave serversD.It flushes dirty pages in the buffer pool to the REDO logs

更多“Which statement concerning GPS is TRUE ________.A.It cannot be used in all parts of the wo ”相关问题

  • 第1题：

    Which statement concerning carbon dioxide is FALSE ________．

    A.It displaces the oxygen in the air

    B.It cannot be seen

    C.It cannot be smelled

    D.It is safe to use near personnel in a confined space


    正确答案：D

  • 第2题：

    Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited ________．

    A.It is required on all vessels

    B.It may be located in a conspicuous place in the wheelhouse

    C.It may be located at the bilge and ballast pump control station

    D.All of the above


    正确答案：C

  • 第3题：

    Which statement about the gyrocompass is FALSE ________．

    A.Its accuracy remains the same at all latitudes

    B.It seeks the true meridian

    C.It can be used near the Earth's magnetic poles

    D.If an error exists，it is the same on all headings


    正确答案：A

  • 第4题：

    Which statements concerning the switch construct are true？（）  

    • A、All switch statements must have a default label.
    • B、There must be exactly one label for each code segment in a switch statement.
    • C、The keyword continue can never occur within the body of a switch statement.
    • D、No case label may follow a default label within a single switch statement.
    • E、A character literal can be used as a value for a case label.

    正确答案:E

  • 第5题：

    Which two statements are true about terms in a routing policy?（）

    • A、A routing policy cannot have more than one term.
    • B、If a term does not contain a from statement, all routes match.
    • C、If a term does not contain a from statement, the Junos OS will not commit.
    • D、A then statement is not mandatory in a term.

    正确答案:B,D

  • 第6题：

    Which two statements are true regarding the ORDER BY clause? （）

    • A、It is executed first in the query execution 
    • B、It must be the last clause in the SELECT statement 
    • C、It cannot be used in a SELECT statement containing a HAVING clause
    • D、You cannot specify a column name followed by an expression in this clause 
    • E、You can specify a combination of numeric positions and column names in this clause

    正确答案:B,E

  • 第7题：

    Which statement is true regarding subqueries?（）

    • A、The LIKE operator cannot be used with single-row subqueries 
    • B、The NOT IN operator is equivalent to IS NULL with single-row subqueries 
    • C、=ANY and =ALL operators have the same functionality in multiple-row subqueries 
    • D、The NOT operator can be used with IN, ANY, and ALL operators in multiple-row subqueries 

    正确答案:D

  • 第8题：

    单选题
    Which statement is true concerning a vessel equipped with operational radar?（）.
    A

    The Master of the vessel must be on the bridge when the radar is in use

    B

    The radar equipment is only required to be used in restricted visibility

    C

    The use of a radar excuses a vessel from the need of a look-out

    D

    This equipment must be used to obtain early warning of risk of collision


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited（）.
    A

    It is required on all vessels

    B

    It may be located in a conspicuous place in the wheelhouse

    C

    It may be located at the bilge and ballast pump control station

    D

    All of the above


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    Which statement is true regarding an Ethernet collision domain?（）
    A

    If a router is used, the collision domain includes all devices connected to the router

    B

    If a hub is used, the colision domain is limited to each device and the hub

    C

    If a switch is used, the collision domain is limited to each device and the switch

    D

    If a bridge is used, the collision domain includes all devices connected to the bridge


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    Which statement about Remotely Triggered Black Hole （RTBH） is true？（）
    A

    Route tagging is one of the techniques used by RTBH

    B

    It is used for BGP authentication

    C

    It cannot work with static routes

    D

    It uses extended ACLs for blocking attacks by creating a black hole

    E

    Before configuring RTBH LDP must be enabled on the interface


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    Which statement concerning GPS is TRUE（）.
    A

    It cannot be used in all parts of the world

    B

    There are 12 functioning GPS satellites at present

    C

    It may be suspended without warning

    D

    Two position lines are used to give a 2D fix


    正确答案： A
    解析： 暂无解析

  • 第13题：

    Which statement is TRUE concerning the flash point of a substance ________．

    A.It is lower than the ignition temperature

    B.It is the temperature at which a substance will spontaneously ignite

    C.It is the temperature at which a substance，when ignited，will continue to burn

    D.It is the temperature at which the released vapors will fall within the explosive range


    正确答案：A

  • 第14题：

    Which statement is TRUE concerning inert gas systems on tankers ________．

    A.Flue gases from the ship's boilers are used in some systems

    B.The gas is helium

    C.Using the system accelerates the rusting of the tanks

    D.All of the above


    正确答案：A

  • 第15题：

    Which statement about Remotely Triggered Black Hole （RTBH） is true？（）

    • A、Route tagging is one of the techniques used by RTBH
    • B、It is used for BGP authentication
    • C、It cannot work with static routes
    • D、It uses extended ACLs for blocking attacks by creating a black hole
    • E、Before configuring RTBH LDP must be enabled on the interface

    正确答案:A

  • 第16题：

    Which statement is true regarding an Ethernet collision domain?（）

    • A、If a router is used, the collision domain includes all devices connected to the router.
    • B、If a hub is used, the collision domain is limited to each device and the hub.
    • C、If a switch is used, the collision domain is limited to each device and the switch.
    • D、If a bridge is used, the collision domain includes all devices connected to the bridge.

    正确答案:C

  • 第17题：

    Which statement is true regarding an Ethernet collision domain?（）

    • A、If a router is used, the collision domain includes all devices connected to the router
    • B、If a hub is used, the colision domain is limited to each device and the hub
    • C、If a switch is used, the collision domain is limited to each device and the switch
    • D、If a bridge is used, the collision domain includes all devices connected to the bridge

    正确答案:C

  • 第18题：

    Which of the following cannot be used as input to the SQL Tuning Advisor?（） (Choose all that apply.)

    • A、A single SQL statement provided by a user
    • B、An existing SQL Tuning Set (STS)
    • C、A preprocessed Database Replay workload
    • D、A schema name
    • E、SQL statement identified in EM as using excessive resources

    正确答案:C,D

  • 第19题：

    单选题
    Which statement about the gyrocompass is FALSE（）.
    A

    Its accuracy remains the same at all latitudes

    B

    It seeks the true meridian

    C

    It can be used near the Earth's magnetic poles

    D

    If an error exists，it is the same on all headings


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    Which statement is TRUE concerning radiotelephones on board towing vessels?（）
    A

    There cannot be a radiotelephone located anywhere except in the wheelhouse

    B

    The officer in charge of the wheelhouse is considered to have the radiotelephone watch

    C

    Only distress messages may be transmitted over channel 13

    D

    Only the Master of the vessel is allowed to speak over the radiotelephone


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    Which statement is true regarding subqueries?（）
    A

    The LIKE operator cannot be used with single-row subqueries 

    B

    The NOT IN operator is equivalent to IS NULL with single-row subqueries 

    C

    =ANY and =ALL operators have the same functionality in multiple-row subqueries 

    D

    The NOT operator can be used with IN, ANY, and ALL operators in multiple-row subqueries 


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    Which statement is TRUE concerning lifeboat gripes?（）
    A

    They must be released by freeing a safety shackle

    B

    They should not be released until the boat is in lowering position

    C

    They may be adjusted by a turnbuckle

    D

    They are normally used only with radial davits


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Which of the following statements is true concerning Halon 1301 fire extinguishing equipment?（）
    A

    The agent is considered nontoxic at room temperature in low concentrations

    B

    The agent is less effective than carbon dioxide

    C

    Halon primarily extinguishes the fire by cooling

    D

    The agent cannot be used on electrical fires because it leaves a residue


    正确答案： B
    解析： 暂无解析

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