Which of the followings is not an indication of a bad maintenance?（）<br>A:a pipe with welded connections<br>B:a pipe with several clips<br>C:a cement box<br>D:a leaking valve

Which of the followings is not an indication of a bad maintenance?（）
A:a pipe with welded connections
B:a pipe with several clips
C:a cement box
D:a leaking valve

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:【10245403】个 (题库试题定时更新)