Wire rope should be greased （）when not in use.<br>A:every half a month<br>B:every month or two<br>C:every half a year<br>D:every year

Wire rope should be greased （）when not in use.
A:every half a month
B:every month or two
C:every half a year
D:every year

出自：船舶水手证

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:【10244422】个 (题库试题定时更新)