用地潜力属于城镇土地等级的（）因素。

Mooring lines should be turned end-for-end occasionally. This is because ______.

A.a line is weakened by constantly pulling on it in one direction

B.normal wear on the line is thus distributed to different areas

C.it prevents the line from kinking or unlaying

D.it prevents permanent misalignment of the line’s internal strands

A mooring line leading 45°to keel, used to check forward or astern movement of a vessel, is called a__________.

A.spring line

B.warp line

C.bow line

D.breast line

If two mooring lines are to be placed on the same bollard，which method is BEST？______.

A.Place the eye from the forward line on the bollard and then place the eye from the second line directly over the first

B.It makes no difference how the lines are placed

C.Place the eye from either line on the bollard，and then bring the eye of the other line up through the eye of the first，and place it on the bollard

D.Place both eyes on the bollard，in any manner，but lead both lines to the same winch head on the vessel and secure them on the winch

Which statement is TRUE about the use of a“gob rope”________．

A.The gob rope is a mooring line for tying up lighters for working cargo alongside a vessel anchored in an open roadstead

B.The gob rope is used to secure the towline aft over the centerline of a tug

C.The gob rope is a line hung over a vessel's side to assist in boarding

D.The gob rope is a rope used in mooring a vessel to a buoy

A.spring line

B.warp line

C.bow line

D.breast line

A.half the breaking strength of the mooring line

B.the full breaking strength of the mooring line

C.the maximum expected tension of the mooring line

D.50% over the working tension of the mooring line

Mooring winch should be equipped with mechanical brakes capable of holding ______.

A.half the breaking strength of the mooring line

B.the full breaking strength of the mooring line

C.the maximum expected tension of the mooring line

D.50% over the working tension of the mooring line

The indication of a slipping anchor is a（n）______．

A.Decrease in mooring line length

B.Increase in the opposite amperage

C.Increase in the opposite line tension

D.Decrease in mooring line tension and amperage

An anchor winch should be equipped with mechanical brakes capable of holding ______．

A.half the breaking strength of the mooring line

B.the full breaking strength of the mooring line

C.the maximum expected tension of the mooring line

D.50% over the working tension of the mooring line