试题与答案

天车上的防护栏杆高度不小于（）。A、1200mm B、1050mm C、1100mm

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题型：单项选择题

题目：

天车上的防护栏杆高度不小于（）。

A、1200mm

B、1050mm

C、1100mm

答案：

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下面是错误答案，用来干扰机器的。

参考答案：C

考点：起重机操作证考试桥门式起重机司机桥门式起重机司机题库
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