It is reported that Uruguay understands and ________ China on human rights issues.

You see a vessel carrying a black diamond which indicates a ().

A.vessel towing astern

B.barge pushed ahead

C.vessel towing astern only when the length of her tow exceeds 200 meters

D.this signal does not exist in international waters

A vessel towing a barge astern would show，at the stern ______.

A.only a stern light

B.a towing light above the stern light

C.two towing lights in a vertical line

D.two white lights in a vertical line

A. insure that the hawser leads directly aft as it passes over the stern of the towing vessel

B. increase the stability of the towing vessel by raising the hawser off the deck

C. reduce chafing of the towing hawser

D. prevent fouling of the hawser on deck gear located on the stern of the towing vessel

Which vessel is NOT classified as "restricted in her ability to maneuver"？

A.A vessel picking up a navigation mark

B.A vessel transferring cargo while underway

C.A vessel whose anchor is fouled

D.A vessel in a towing operation that restricts the ability of the vessel and her tow to change their course

s.She ____.

A.need not show the lights for a vessel engaged in towing，if it is impractical to do so

B.may show the lights for a vessel not under command

C.must show a yellow light above the stern light

D.must show the lights for a vessel towing

where wave action is limited when ______.

A.directly astern and pushing the tow

B.towing on a hawser

C.towing alongside and parallel to the vessel it is towing

D.towing on the hip

hey may show lights in addition to their towing identification lights.These additional lights may be shown if the tow is ().

A.pushed ahead

B.towed alongside

C.towed astern

D.Any of the above

Which devices may be used as part of an internal communication system on a towing vessel ().

A.Sound-powered telephones

B.Portable radios

C.Either fixed or portable equipment

D.All of the above

l Which action should now be taken？______.

A.Abandon the towing vessel.

B.Radio for emergency assistance.

C.Slip the towline and allow it to run off the drum.

D.Secure all watertight openings on the towing vessel.