单项选择题
In determining a safe speed（）shall not be among those taken into account.
A.the state of visibility B.the power of the vessel C.the traffic density D.the maneuverability of the vessel
单项选择题 In determining a safe speed（）shall not be among those taken into account.
单项选择题 In determining if risk of collision exists，if there is any doubt，such risk shall be deemed to（）.
