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问题：
[单选题]当井架高度在（ ）时设置一道缆风绳。
A、20米以下
B、10米以上
C、15米以下
D、12米以下
参考答案：
C
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- ● Owner are to be reponible for lo of or damage to the good or delay in delivery of the good only in cae the lo，damage or delay ha been caued by the improper or negligent towage of the good．Thi mean that（）.
- ● The carrier i liable for lo of or damage to the good or delay in delivery caued by fire，（）the claimant prove that the fire aroe from fault or neglect on the part of the carrier，hi ervant or agent.
- ● Shutdown price（or point，or rule） 停业价格（或停业点、停业原则）
- ● 翻译：With Average or With Particular Average（WA or WPA）（）
- ● 提升机高度在20米以下时，缆风绳应不小于一组。（）
