With the help of modern technology, ships are able to receive automated broadcast of safety messages（）.
- Aby day or at night
- Balmost round the clock
- Csomewhat and sometime
- Dfrom sunrise to sunset
问题
With the help of modern technology, sh
参考解析：
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6、With the help of modern technology, sh
With the help of modern technology, ships are able to receive automated broadcast of safety messages（）.Aby day or at nightBalmost round the clockCsomewhat and sometimeDfrom sunrise and sunset