单项选择题
A facility used for the discharge of a cargo of a particular hazard，such as chlorine，butane or ethane，must have what to warn water traffic of an immediate danger during fire or cargo release?（）
A.An emergency boat and crew
B.A siren or rotating flashing light
C.Flashing red lights located one-half mile upstream and downstream of the facility
D.Buoys with flashing lights controlled from shore，located one-half mile upstream anddownstream of the facility
相关考题
-
单项选择题
A 20-meter power-driven vessel pushing ahead or towing alongside will display（）.
A.a single white light forward
B.two masthead lights in a vertical line
C.two towing lights in a vertical line
D.two all-round red lights where they can best be seen -
单项选择题
A traffic separation zone is that part of a traffic separation scheme which（）.
A.is between the scheme and the nearest land
B.contains all the traffic moving in one direction
C.is designated as an anchorage area
D.separates traffic proceeding in one direction from traffic proceeding in the opposite direction -
单项选择题
A vessel using a traffic separation scheme shall（）.
A.only anchor in the separation zone
B.cross a traffic lane at as small an angle as possible
C.avoid anchoring in areas near the termination of the scheme
D.utilize the separation zone for navigating through the scheme if she is impeding other traffic due to her slower speed
