A、is not visible
B、are not invisible
C、are not visible
D、can easily be seen
更多“I can not take any actions to avoid close quarters situation with you，because your navigation lights（）.”相关的问题
A、Can you take a message for me. B、Are you sure for that. C、Would you like to leave a message. D、Can you phone me.
A、Make sure the action is taken in enough time B、Not make any large course changes C、Not make any large speed changes D、All of the above
A、can be overcome by using traditional techniques B、can not be overcome by satellite system C、can be overcome by satellite and digital techniques D、can not be tackled by any modern system
A、No, many thanks. I can do B、No, thanks. I can manage it C、No, not necessary. Thank you anyway D、No, you needn't. Thank you anyway
A、took effective measures B、did not take any measure C、asked the private sector D、refused to take strong government action
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