Factor of safety
Number of wires per strand
Number of strands per wire rope
Number of wires in the core
第1题：
Which wire rope purchases may be used with a 30-ton pedestal crane ________．
A.Hoist
B.Luff
C.Rider block
D.All of the above
第2题：
What is the accepted standard for wire rope falls used in connection with the lifeboat gear ________．
A.Six by seven galvanized wire rope
B.Six by twenty-four improved plow steel wire rope
C.Six by thirty-seven preformed fiber-core wire rope
D.Six by nineteen regular-lay filler wire rope
第3题：
Vessels lying afloat at buoys for more than 24 hours should use anchor chain for ______ and insurance wire for ______.
A.bow mooring／stern line
B.forward spring／after spring
C.forward breast rope／forward spring
D.slip rope／stern line
第4题：
Ropes can be divided into three types: （）.
第5题：
Given the same water depth and line tension, the holding power of a 19 pound / foot wire rope mooring system in comparison to the holding power of a 90 pound / foot chain mooring system will be ______.
A.weaker
B.equal
C.greater
D.Indeterminable
第6题：
Where do fatigue failures of wire rope mooring lines usually occur ________．
A.In the middle part of the line length
B.Near the socketed end fitting adjacent to the anchor
C.At the point where the line touches the bottom
D.At the place the anchor buoy is attached to the line
第7题：
Chafing gear(防摩擦装置) is used to______．
A.anchor the boat
B.pick up heavy loads
C.protect fiber rope from abrasion
D.strengthen mooring lines
第8题：
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
第9题：
In a combination chain and wire rope mooring system, the anchor chain is deployed at the anchor end of the line to ______.
A.increase fatigue life of the system
B.reduce the time to retrieve the line
C.increase the holding power
D.reduce the catenary
第10题：
A （）(钢丝刷) should be used on all bare metal to remove the last of the scale.