A spanner is a（）.<br>A:cross connection line between two main fire lines<br>B:special wrench for the couplings in a fire hose line<br>C:tackle rigged to support a fire hose<br>D:none of the above

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

出自：海船船员证

提示：
同一【IP】的非会员用户每天可免费获取10次答案

收藏本站【zk.995w.com】，下次访问不迷路

本站试题总数:【10252937】个 (题库试题定时更新)