A power-driven vessel，when towing astern，shall show（）.

A . she can be observed by radar B . she can be observed visually from the other vessel C . she can be plotted on radar well enough to determine her heading D . her fog signal can be heard

A . has no more than two compartments B . has two compartments in addition to the engine room C . will sink if any two compartments are flooded D . will float if any two adjacent compartments are flooded

A . vessel on her port side that is crossing her course B . vessel that is overtaking her C . seaplane on the water D . sailing vessel

A . stop her engines B . alter course to starboard C . sound the danger signal D . back dow

A . stop engines B . hold course and speed C . alter course to port D . sound the danger signal

A . three masthead lights in a vertical line instead of either the forward or after masthead light B . two masthead lights in a vertical line instead of either the forward or after masthead lights C . two towing lights in a vertical line at the stern D . a small white light aft of the funnel

A . Whether she is normally a fishing or a trawling vessel B . Her gross tonnage C . Her length D . The type of gear she carrie

A . two all-round red lights in a vertical line B . three all-round red lights in a vertical line C . two all-round yellow lights in a vertical line D . three all-round green lights in a vertical line

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 see

A . crossing situation B . head-on situation C . restricted visibility D . overtaking situatio

A . one sidelight and the masthead light are visible B . the vessels will pass closer than half a mile C . both vessels sound one prolonged blast D . both sidelights and masthead light(s) are visible

A、 Both vessels B、 Neither vessel C、The vessel on portside D、  The vessel on starboard side

A . immediately stop B . immediately maneuvering C . immediately anchoring D . immediately going aster

A . head-on situation B . crossing situation C . overtaking situation D . close-quarters situatio

A . Can always rely on a buoy to be on station B . Can always rely on a buoy to show proper light characteristics C . Should assume a wreck buoy is directly over the wreck D . Should never rely on a floating aid to maintain its exact positio

A . is pushed B . being pushed C . was pushed D . be pushed

A . in a crossing situation B . when they are making more speed than the power-driven vessel C . when the sailing vessel is overtaking D . on the Inland Waters of the United State

A . The power-driven vessel must keep out of the way of the sailing vessel B . A special circumstance situation exists C . The sailing vessel must keep out of the way of the power- driven vessel D . The vessel which has the other vessel to the right must keep out of the way

A . a vessel restricted in her ability to maneuver B . a vessel under command C . a passenger ship D . a seaplane on the water

A . stand-on vessel and would sound two short blasts B . give-way vessel and would sound no whistle signal C . stand-on vessel and would sound no whistle signal D . give-way vessel and would sound two prolonged blasts followed by two short blast

A . it is overtaken by the tow B . it is pulled sideways by the tow C . the weight of the towing hawser causes loss of maneuverability D . the propeller is fouled by the towing hawser