题目内容：
石油化工物料用铁路装卸完毕后，须静止至少（ ）后，再进行计量等作业。 A．1min
B．2min
C．3min
D．4min
参考答案：
答案解析：
单选题：石油化工物料用铁路装卸完毕后，须静止至少（ ）后，再进行计量等作业。
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- 题目类型：单选题
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石油化工物料用铁路装卸完毕后，须静止至少（ ）后，再进行计量等作业。 A．1min
B．2min
C．3min
D．4min
石油化工物料用铁路装卸完毕后，须静止至少（ ）后，再进行计量等作业。 A．1min
B．2min
C．3min
D．4min
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