64/81，81/4，4，9，6，（ ）
64/81，81/4，4，9，6，（ ）
参考解析
解析：第一步，递推数列，用圈三法找规律。第二步，对原数列相邻三项中的前两项分别做积，积数列为16，81，36，54。乘积正好是第三项的平方，即相邻三项存在的规律为a×b＝c2。那么括号处为√（6×9）=3√6。因此，选择B选项。
相关考题：
Whichofthefollowingactionswillenable64－bitapplicationsonasystemwith32－bitkernel() A.Usesmitload64bittoenablethe64-bitapplications.B.Re-installallapplicationswith64-bitversions.C.Re-installtheOSwith64-bitkernelenabled.D.Changethekernelto64bit，reboot，andthenusethefollowingcommand：chdev-lsys0-aapplications=64_bit
Whichofthefollowingactionswillenable64－bitapplicationsonasystemwitha32－bitkernel?() A.changethekernelto64bit，reboot，andthenusethefollowingcommand：chdev-lsys0-aapplications=64_bitB.Re-installtheOSwith64-bitkernelenabledC.Re-installallapplicationswith64-bitversionsD.Usesmittoenablethe64-bitapplications
Howcanasystemadministratordetermineifasystemisrunningin32－bitor64－bitmode() A.UsetheIs-altoseeif/unixislinkedto/usr/lib/boot/unix_64B.Checkthe/etc/inittabtoseeifthereisaload64bitentryC.Use’prtconf-c1toseeifthesystemis64-bitenabledD.UsetheIslppcommandtoseeifthebos.mp64filesetisinstalled
You.createWindows.Forms.applications.by.using.the.NETFramework3.5.YouplantousetheWindowsInstallertodeployanewapplication.Theapplicationmustmeetthefollowingrequirements：（1）Supportdeploymentto32bitand64bitoperatingsystems（2）Usethe64bitProgramFilesfolderwhendeployedto64bitplatformsYouneedtoensurethattheapplicationisdeployedappropriately.Whatshouldyoudo？（）A.CreateasingleMSIfile.AddalaunchconditionthatissettoVersionNT64B.CreateasingleMSIfile.AddalaunchconditionthatissettoNOTVersionNT64C.CreateanMSIfilethatistargetedto64bitplatforms.CreateanMSIfilethatistargetedto32bitplatformsD.CreateasingleMSIfile.Createamergemodulethatcontainsthe32bitand64bitcode
单选题有以下程序：#include#define S(x) x *xmain(){ int k=5,j=2; printf(%d,%d,S(k+j+2),S(j+k+2));}程序的运行结果是（ ）。A21,18B81,81C21,21D18,18