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毒力的强弱取决于

单选题
2021-09-02 00:03
A、细菌侵入的门户
B、机体抵抗力的强弱
C、细菌侵入的数量
D、细菌侵袭力及细菌的毒素
E、细菌能否产生芽胞
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正确答案
D

试题解析

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