The VTS has been designed to aid in（）.<br>A:the prevention of collision<br>B:the promotion of the traffic flow<br>C:the complying of port regulation<br>D:the development of navigational technique

The VTS has been designed to aid in（）.
A:the prevention of collision
B:the promotion of the traffic flow
C:the complying of port regulation
D:the development of navigational technique

出自：海船船员证

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