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B27的优选攻略

设等差数列 的前n项和为 ,已知 ,则 (       )A.-27                 B.27...
一条肽链有9个肽键,控制这条肽链合成的基因中至少要有的碱基个数(  )A.9个   B.27个 C.30个  ...
B27造句怎么写
  • B27造句怎么写

  • B27Associationisaselfhelpgroupestablishedin1995byagroupofAnkylosingSpondylitispatients.OBJECTIVE:Toexploretheaccuracy,sensitivityandspecificityofIMS-ELISAfordetectingHLA-B27anditsvalueintheauxiliarydiagnosisofankylosingspondylitis.MethodsHLA-B27detec...
  • 20739
已知:,,则的值等于(     )   A.44       B.27        C.25       D...
、数列对任意满足,且,则等于(  ) A.24            B.27           C.30 ...
已知为等差数列,若,则A.24                B.27             C.15   ...
已知等差数列{}中,则该数列前9项和S9等于(   )A.18          B.27          ...
HLA-B27造句怎么写
  • HLA-B27造句怎么写

  • RelationshipbetweenHLA-B27SubtypeandAnkylosingSpondylitis;TheClinicalStudyofDu-MoxibustionTreatingontheCasesofGeneHLA-B27(+)andHLA-B27(-)ExpressionofAnkylosingSpondylitis;ClinicalStudyonDu-moxibustioninTreatingAnkylosingSpondylitisbyInhibitingGeneExp...
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在等比数列中,,且为和的等差中项,则为  A.9                  B.27         ...