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《危险化学品安全管理条例》规定，生产、储存、使用剧毒化学品的单位，应当对生产、储存装置每年进行一

次安全性评价，生产、储存、使用其他危险化学品的单位应当对生产、储存装置每_______年进行一次安全性评价。

A．半

B．一

C．二

D．三

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