选择题：作为标准加以推广的BF防坠器属于( )。(本题2.0分) A、木罐道切割式防坠器 B、钢轨罐道摩

题目内容：

作为标准加以推广的BF防坠器属于( )。(本题2.0分)
A、木罐道切割式防坠器
B、钢轨罐道摩擦式防坠器
C、制动绳摩擦式防坠器

参考答案：

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