The commonest bacterium for community-acquired pneumonia is () A: alpha hemolytic streptococcus B: staphylococcus aureus C: streptococcus pneumoniae D: klebsiella pneumoniae E: hemophilus influenza

The<br/>commonest bacterium for community-acquired pneumonia is() A: alpha<br/>hemolytic streptococcus B: staphylococcus aureus C: streptococcus pneumoniae D: klebsiella pneumoniae E: hemophilus influenza

Oswald Avery and his colleague proved that the DNA is the transforming agent in Diplococcus pneumoniae transformation.

内基氏小体是指——————————————————————，手足口病是指————————————————————————，S.pneumoniae是指————————————————————————，Hypha是指——————————————————————————————。

Oswald Avery and his colleague proved that the DNA is the transforming agent in Diplococcus pneumoniae transformation. A: 正确 B: 错误

which is the major pathogen of the aspiration abscess() A: staphylococcus aureus B: Anaerobic bacteria C: pseudomonas aeruginosa D: Klebsiella pneumoniae E: streptococcus aureus

Which<br/>bacterium will be observed with acid fast stain () A: Escherichia coli B: Mycobacterium tuberculosis C: Streptococcus<br/>pneumoniae D: Staphylococcus <br/>aureus

Among the following statements, which one is wrong concerning mortality of bacteremia due to Streptococcus pneumoniae inflicted bacteremia? A: They are produced in bacteria by very large intracellular enzymatic complexes. B: They are produced by bacterial consortia. C: They are produced by viruses

机械零件的强度条件可以写成____。 A: σ≤[σ],τ≤[τ]或Sσ≤[S]σ,Sτ≤[S]τ B: σ≥[σ],τ≥[τ]或Sσ≥[S]σ,Sτ≥[S]τ C: σ≤[σ],τ≤[τ]或Sσ≥[S]σ,Sτ≥[S]τ D: σ≥[σ],τ≥[τ]或Sσ≤[S]σ,Sτ≤[S]τ

球面镜的物距为s，象距为s′，则横向放大率为（）。 A: s′/s B: s/s′ C: -s′/s D: -s/s′