A spanner is a（）.

A . cross connection line between two main fire lines B . special wrench for the couplings in a fire hose line C . tackle rigged to support a fire hose D . none of the above

时间：2022-09-11 15:14:38 所属题库：SOLAS公约的有关内容题库

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<html><H3>This is a header</h3>This is a paragraph.<H3>This is a header</h3>This is a paragraph.</body></html>以上代码运行结果为：This is a headerThis is a

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A spanner is a（）.

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