All echo-sounders can measure the（）.<br>A:actual depth of water<br>B:actual depth of water below keel<br>C:average depth from waterline to hard bottom<br>D:average depth of water to soft bottom

All echo-sounders can measure the（）.
A:actual depth of water
B:actual depth of water below keel
C:average depth from waterline to hard bottom
D:average depth of water to soft bottom

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)