单选题
发布日期:2021-10-02
to trace and locate enemy vessels
to monitor deep-sea volcanic eruptions
to study the movement of ocean currents
to replace the global radio communications network
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恢复点目标的英文简称是()
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2021年下半年全国大学英语四、六级考试成绩公布时间
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The underwater listening system was originally designed ______.
The underwater listening system was originally designed ______.
Which of the following is true about the U.S. Navy underwater listening net-work...
Which of the following is true about the U.S. Navy underwater listening net-work...
The deep-sea listening system makes use of ______.
The deep-sea listening system makes use of ______.
What’s the difference between casual listening and focused listening?
casual listening
A snag or other underwater obstruction may form a().
A snag or other underwater obstruction may form a().