In case of accidents（）the risk of sinking,all effective measures shall be taken to steer clear of the fairway to avoid（）the traffic.<br>A:involving/impeding<br>B:involved/to impede<br>C:involving/to impede<br>D:involved/impeding

In case of accidents（）the risk of sinking,all effective measures shall be taken to steer clear of the fairway to avoid（）the traffic.
A:involving/impeding
B:involved/to impede
C:involving/to impede
D:involved/impeding

出自：海船船员证

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