题目内容
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(1)( )CFR.
(2)( )DEQ.
(3)( )CFR Landed.
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更多“If under an ocean shipment the…”相关的问题
Why did the U.S. Navy set up underwater microphones around the world in the 160s？
A．To listen for changes in ocean structure.
B．To listen for changes of ocean currents or volcanic activity.
C．To make sure whether there was a giant squid deep in the ocean.
D．To follow the track of the Soviet warships under water.
The phrase "ring of fire"(Para. 3) refers to ______.
A．the area around or in the Pacific Ocean where most of the world's earthquakes happen
B．the area where earthquakes are too small to be felt
C．the area under the ocean or away from people
D．the area where earthquakes occur a million times a year
A．It has a number of active volcanoes.
B．It has an atmosphere like the earth's.
C．It has a large ocean under its surface.
D．It has deep caves several miles long.
The deep-sea listening system makes use of______.
A．the sophisticated technology of focusing sounds under water
B．the capability of sound to travel at high speed
C．the unique property of layers of ocean water in transmitting sound
D．low-frequency sounds travelling across different layers of water
A. It has a number of active volcanoes.
B. It has an atmosphere like the earth's.
C. It has a large ocean under its surface.
D. It has deep caves several miles long.
The deep-sea listening system makes use of______ .
A．the sophisticated technology of focusing sounds under water
B．the capability of sound to travel at high speed
C．the unique property of layers of ocean water in transmitting sound
D．low-frequency sounds traveling across different layers of water
The deep-sea listening system makes use of
A．the sophisticated technology of focusing sounds under water
B．the capability of sound to travel at high speed
C．the unique property of layers of ocean water in transmitting sound
D．low-frequency sounds traveling across different layers of water
