As oil pipe line connections were broken,（）quantity of oil was caused to spill onto the wharf and into the dock water.<br>A:a not knowing<br>B:an unknowing<br>C:an unknown<br>D:a not known

As oil pipe line connections were broken,（）quantity of oil was caused to spill onto the wharf and into the dock water.
A:a not knowing
B:an unknowing
C:an unknown
D:a not known

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:【10252701】个 (题库试题定时更新)