单选题In the expression an, n is an even power. Which of the following expressions does not have even power?Aan +lBa2nCan+2Da3nEan+4
单选题
In the expression an, n is an even power. Which of the following expressions does not have even power?
A
an +l
B
a2n
C
an+2
D
a3n
E
an+4
参考解析
解析：
Because n is an even power, n + 1 is an odd power. That means an+1 has an odd power. The powers in the other choices are even.
Because n is an even power, n + 1 is an odd power. That means an+1 has an odd power. The powers in the other choices are even.
相关考题：
They have discovered a new medical herb, which they have ________ a large number of patients and found to have great healing power. A. operatedB. tried onC. took onD. tried with
in ireland，the president is only a symbolic head of state and does not have executive power. ()
A user’s laptop does not produce sound even though the volume settings are at maximum in theoperating system. Which of the following would MOST likely resolve this issue?() A. A new sound cardB. A new speakerC. A BIOS updateD. A hardware volume control
Which effect does speed through the water have on a vessel which is underway in shallow water ________．A.A decrease in the speed results in a decrease in steering response and maneuverabilityB.An increase in speed results in the stern sucking down lower than the bowC.An increase in speed results in the vessel rising on an even planeD.A decrease in speed results in the vessel sucking down on an even plane
Which of the following statements is true according to Tocqueville？( ) A.As social conditions and opportunities improve，social satisfaction grows more quickly. B.Social mechanisms have seemingly conflicting nature. C.As social conditions improve，there will be fewer people enjoy the social privilege. D.As social conditions improve，the people will have more concentrated power.
A technician does not have power to a PC. Which of the following tools should the technician use to check for electricity?（）A、Cable testerB、Power supply testerC、Tone generatorD、Multimeter
A client needs to be able to install a new local printer, but does not currently have permission to do so. Which of the following is the BEST user group to put the client in, to allow the printer to be installed?（）A、Power UsersB、UsersC、Backup UsersD、Guest
A user’s laptop does not produce sound even though the volume settings are at maximum in theoperating system. Which of the following would MOST likely resolve this issue?（）A、A new sound cardB、A new speakerC、A BIOS updateD、A hardware volume control
A technician has just installed an upgraded graphics card. The computers power turns off before itfinishes booting. Which of the following is the cause of the problem? （）A、The monitor cannot display the increased resolution that is a feature of the new graphics card.B、The power supply does not provide enough wattage to power the new graphics card.C、The new graphics card is incompatible with the existing processor.D、The computer does not have enough RAM to support the new graphics card.
Which of the following listed diagnostics products provides easy notification and identification of a failed component， even if the power is off？ （）A、Insight managerB、PowerPathC、LightPath DiagnosticsD、Sun Server Diagnostic
What does the FORCE option for creating a view do?（）A、creates a view with constraintsB、creates a view even if the underlying parent table has constraintsC、creates a view in another schema even if you don't have privilegesD、creates a view regardless of whether or not the base tables exist
单选题If a and b are integers and the sum of ab and b is even, which of the following could be true?Ⅰ. a and b are both odd.Ⅱ. a is even and b is odd.Ⅲ. a is odd and b is even.AⅠ onlyBⅡonlyCⅢ onlyDⅠ and ⅡEⅠand Ⅲ
单选题What does the FORCE option for creating a view do? （）Acreates a view with constraintsBcreates a view even if the underlying parent table has constraintsCcreates a view in another schema even if you don't have privilegesDcreates a view regardless of whether or not the base tables exist
单选题A user’s laptop does not produce sound even though the volume settings are at maximum in theoperating system. Which of the following would MOST likely resolve this issue?（）AA new sound cardBA new speakerCA BIOS updateDA hardware volume control
单选题a and b are positive, a is even and b is odd. Which of the following must also be odd?AabBa/bCa + 2bDbaE(ab) a
多选题Which four statements correctly describe functions that are available in SQL? （）AINSTR returns the numeric position of a named character.BNVL2 returns the first non-null expression in the expression list.CTRUNCATE rounds the column, expression, or value to n decimal places.DDECODE translates an expression after comparing it to each search value.ETRIM trims the heading of trailing characters (or both) from a character string.FNVL compares two expressions and returns null if they are equal, or the first expression of they are not equal.GNULLIF compares twp expressions and returns null if they are equal, or the first expression if they are not equal.
多选题If x and y are both positive even integers, which of the following expressions must be even? (Select all such expressions.)AxyB(x+1)yCx(y+1)
单选题A technician has just installed an upgraded graphics card. The computers power turns off before itfinishes booting. Which of the following is the cause of the problem? （）AThe monitor cannot display the increased resolution that is a feature of the new graphics card.BThe power supply does not provide enough wattage to power the new graphics card.CThe new graphics card is incompatible with the existing processor.DThe computer does not have enough RAM to support the new graphics card.
单选题According to the passage, which of the following should be considered sources of renewable energy?APetroleum, sunlight and wind power.BGas, water and fossil fuels.CCoal, natural gas and hydropower.DSunlight, water and wind power.
单选题If m and n are positive integers and 3m+n-1=2m+2n, which of the following must be true?I. m and n are consecutive integers.II. m is even.III. n is odd.ANoneBI onlyCII onlyDIII onlyEI, II, and III
单选题Which effect does speed through the water have on a vessel which is underway in shallow water （）.AA decrease in the speed results in a decrease in steering response and maneuverabilityBAn increase in speed results in the stern sucking down lower than the BowCAn increase in speed results in the vessel rising on an even planeDA decrease in speed results in the vessel sucking down on an even plane
单选题A technician does not have power to a PC. Which of the following tools should the technician use to check for electricity?（）ACable testerBPower supply testerCTone generatorDMultimeter
单选题An administrator is troubleshooting a power supply that is believed to have failed. Which of the following tools will BEST help test the power supply？（）AESD EquipmentBMultimeterCPOST CardDToner Probe
单选题Which of the following listed diagnostics products provides easy notification and identification of a failed component， even if the power is off？ （）AInsight managerBPowerPathCLightPath DiagnosticsDSun Server Diagnostic
单选题A technician has found that the uninterruptible power supply (UPS) connected to a server does not have sufficient battery power to allow the server to shutdown gracefully. Which of the following is the MOST cost effective way to allow this server to shutdown gracefully?（）AInstall a second UPS.BIncrease the size of the swapfile.CIncrease the size of the pagefile.DInstall an extended battery pack into the UPS
单选题In the expression an, n is an even power. Which of the following expressions does not have even power?Aan +lBa2nCan+2Da3nEan+4
单选题Stone does not（）, and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.AcrackBdecayCdestroyDcrush