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单选题
A common class of wire rope used for mooring is the 6x19 class. What does the 6 represent?（）
A
Factor of safety
B
Number of wires per strand
C
Number of strands per wire rope
D
Number of wires in the core
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What is the accepted standard for wire rope falls used in connection with the lifeboat gear ________．A.Six by seven galvanized wire ropeB.Six by twenty-four improved plow steel wire ropeC.Six by thirty-seven preformed fiber-core wire ropeD.Six by nineteen regular-lay filler wire rope
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Chafing gear(防摩擦装置) is used to______．A.anchor the boatB.pick up heavy loadsC.protect fiber rope from abrasionD.strengthen mooring lines
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考题
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 systemB.reduce the time to retrieve the lineC.increase the holding powerD.reduce the catenary
考题
Ropes can be divided into three types: （）.A、natural fiber rope, manila rope and synthetic ropeB、natural fiber rope, synthetic rope and wire ropeC、synthetic rope, manila rope and wire ropeD、synthetic rope, manila rope and wooden rope
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A （）(钢丝刷) should be used on all bare metal to remove the last of the scale.A、wire brushB、wire ropeC、wire rodD、wire rope clip
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单选题The strongest method of forming an eye in wire rope is using（）.A
three wire rope clampsB
an eye splice with four or five tucksC
a thimble fastened with four or five tucksD
a wire rope socket attached with zinc
考题
单选题A mooring line is described as being 6x24，1-3/4 inch wire rope. What do the above numbersrefer to?（）A
Strands，yarns，circumferenceB
Strands，wires，diameterC
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Strands，circumference，wires
考题
单选题Which is normally used to hold wire rope for splicing（）.A
Come alongB
JiggerC
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考题
单选题A common class of wire rope is the 6X37 class.What does the 37 represent（）.A
Number of wires in the inner coreB
Number of strands per wire ropeC
Tensile strength of the wireD
Number of wires per strand
考题
单选题A 6x19 wire rope would be（）.A
6 inches in diameter and 19 fathoms longB
6 inches in circumference with 19 strandsC
6 strands with 19 wires in each strandD
19 strands with 6 wires in each strand
考题
单选题Galvanizing would not be suitable for protecting wire rope which is used for（）.A
cargo runnersB
mooring wiresC
shroudsD
stays
考题
单选题Chafing gear is used to（）.A
anchor the boatB
pick up heavy loadsC
protect fiber rope from abrasionD
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考题
单选题Chafing gear should be placed（）.A
at all wearing points of mooring linesB
at the bitter ends of all standing riggingC
around running riggingD
on wire rope only
考题
单选题What is the accepted standard for wire rope falls used in connection with the lifeboat gear?（）A
Six by seven galvanized wire ropeB
Six by twenty-four improved plow steel wire ropeC
Six by thirty-seven preformed fiber-core wire ropeD
Six by nineteen regular-lay filler wire rope
考题
单选题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 systemB
reduce the time to retrieve the lineC
increase the holding powerD
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考题
单选题A fid is a（）.A
mallet used when splicing wire ropeB
sharp pointed crow bar used to unlay wire ropeC
tapered steel pin used to separate wire ropeD
tapered wooden pin used when splicing heavy rope
考题
单选题Vessels lying afloat at buoys for more than 24 hours should use anchor chain for（）and insurance wire for（）.A
bow mooring／stern lineB
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forward breast rope／forward springD
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考题
单选题What is an advantage of having wire rope with a fiber core over that of a wire rope of the same size with a wire core（）.A
Fiber core rope offers greater strengthB
Fiber core rope offers greater flexibilityC
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Fiber core rope is the only type authorized for cargo runners
考题
单选题An advantage of nylon rope over manila rope is that nylon rope（）.A
can hold a load even when a considerable number of the yarns have been abradedB
can be stored on deck，exposed to sunlightC
can be used in conjunction with wire or spring-lay ropeD
gives audible warning of overstress whereas manila does not
考题
单选题A deck fitting，used to secure line or wire rope，consisting of a single body with two protruding horns is called a（）.A
bittB
bollardC
capstanD
cleat
考题
单选题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
weakerB
equalC
greaterD
indeterminable
考题
单选题A “spring line” is（）.A
any wire rope used for mooringB
a fire-warpC
a mooring line running diagonally to the keelD
a mooring line perpendicular to the keel
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