0.5 McFarland標準濁度近似下列何種菌落數?
1.5 × \mathrm{10}^{5} CFU/mL
\mathrm{10}^{5}
1.5 × \mathrm{10}^{6} CFU/mL
\mathrm{10}^{6}
1.5 × \mathrm{10}^{7} CFU/mL
\mathrm{10}^{7}
1.5 × \mathrm{10}^{8} CFU/mL
\mathrm{10}^{8}