试题与答案

故障定级阶段按照安全事件的()类定级方法。 A.4 B.3 C.2 D.1

题型:单项选择题

题目:

故障定级阶段按照安全事件的()类定级方法。

A.4

B.3

C.2

D.1

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A,B,C,D,E解析: 直肠癌的辅助检查

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