规则中的了望适用于在能见度受限时，在黄昏和拂晓之间，在繁忙的交通中。
The rule regarding lookouts applies . A. In restricted visibility. B. Between dusk and dawn. C. In heavy traffic. D. All of the above.
规则中的了望适用于在能见度受限时，在黄昏和拂晓之间，在繁忙的交通中。
The rule regarding lookouts applies . A. In restricted visibility. B. Between dusk and dawn. C. In heavy traffic. D. All of the above.
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