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【单选题】
大多数致病菌最适生长的温度和PH为( )A.
A 370C，PH6.5~6.8
B.
B 250C，PH7.2~7.6
C.
C 420C，PH8.4~9.2
D.
D 370C，PH7.2~7.6
E.
E 560C，PH6.5~6.8
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