• 2022-06-06
    Which
    of the following is the predominant flora of the mouth that is the
    major cause of dental caries ()
    A: α-hemolytic
    streptococci
    B: Lactobacillus
    C: epidermidis
    D: coli
    E: fragilis
  • A

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    • 0

      Which<br/>of the following bacterium does not depend on endotoxin or exotoxin<br/>as pathogenic material?:() A: Ehrlichia<br/>coli B: Bacillus<br/>anthracis C: Mycobacterium<br/>tuberculosis D: Clostridium<br/>tetani E: Vibrio<br/>cholerae

    • 1

      Which<br/>of following can cause the great variation of influenza virus and<br/>wide epidemic:() A: gene<br/>reassortment B: gene<br/>recombination C: transduction D: transformation E: conjunction

    • 2

      Which<br/>of the following components can be recognized by phages as receptors<br/>for Escherichia coli?()(、C、D)。 A: lipopolysaccharide B: peptidoglycan C: flagella D: fimbriae

    • 3

      Which<br/>of following can cause the great variation of influenza virus and<br/>wide epidemic: A: gene<br/>reassortment B: gene recombination C: transduction D: transformation E: conjunction

    • 4

      Which<br/>of the following is not a primary cause for Americans to own guns? A: For<br/>hunting B: For<br/>target practice C: To<br/>protect one’s life and property D: To<br/>attack terrorism