阿莫西林与克拉维酸合用抗菌作用明显增强。( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
磺胺类药物与甲氧苄啶合用时能使抗菌效果明显增强,其协同增效的机制为( )。
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