Wire ropes should be greased （）.A、every monthB、every two monthsC、every three monthsD、A or B
Wire ropes should be greased （）.
- A、every month
- B、every two months
- C、every three months
- D、A or B
相关考题：
Lashing is the means of securing vehicles and other cargo by ______．A.tomming down methodB.blocking methodC.bracing methodD.using wire ropes，chains，steel bars，and turnbuckles
Which statement concerning the lashings of containers with solid bar or wire rope lashings is TRUE ________．A.Stack weights should be less when using a solid bar lashing as compared to a wire lashingB.Stack heights may be increased when using a solid bar lashingC.Stack heights should be reduced when using a solid bar lashingD.Solid bars should be used for lashing the first tier only，with wire lashings on the higher tier（s）
If wire rope clips are used to make a joint in a wire lashing，be sure that ______．A.the saddle portion of the clip should be applied to the live load segment and the U-bolt to the dead or shortened end segmentB.the saddle portion and the U-bolt of the clip should be applied to the dead or shortened endC.neither the saddle portion nor the U-bolt of the clip should be applied to the live load segmentD.the U-bolt of the clip should be applied to the live load segment and the saddle portion to the dead or shortened end segment
Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane ________．A.Taglines are wire rope purchases that raise and lower the jibB.Taglines are wire ropes for horizontal positioning of the rider blockC.Taglines can be fastened to corners of vehicles or containersD.The crane might not have taglines installed in its rigging system
Fire hose couplings ______.A.are made of bronze brass, or soft alloy metalsB.should be painted red in order to identify hose lengthsC.are specially hardened to prevent crushingD.should be greased frequently
It should be noted ______ the use of synthetic mooring ropes able to produce sparks by their manipulation is absolutely forbidden on board petroleum tankers and LPG or LNG carriers, or any vessels carring inflammable substances.A.thatB.whichC.whoD.These
（）should be greased every month or two and it should be kept on a reel when not in use.A、Wire ropeB、Hemp ropeC、Nylon ropeD、Wooden rope
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
Finally, a wire brush should be used on all bare （）to remove the last of the scale.A、metalB、woodC、cementD、all the above
（）is the strongest and the most elastic of all the synthetic fiber ropes.A、Hemp ropeB、Wire ropeC、Nylon ropeD、wood rope
Wire rope should be greased （）when not in use.A、every half a monthB、every month or twoC、every half a yearD、every year
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
单选题When securing a hook to the end of a wire rope you should use（）.AA bowline knotBA long spliceCAn overhand knot with a wire rope clipDWire rope clips with a thimble eye
单选题Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane（）.ATaglines are wire rope purchases that raise and lower the jibBTaglines are wire ropes for horizontal positioning of the rider blockCTaglines can be fastened to corners of vehicles or containersDThe crane might not have taglines installed in its rigging system
单选题（）should be greased every month or two and it should be kept on a reel when not in use.AWire ropeBHemp ropeCNylon ropeDWooden rope
单选题On your vessel，a wire rope for the cargo gear shows signs of excessive wear and must be replaced. In ordering a new wire for this 10-ton boom，what safety factor should you use?（）AThreeBFiveCSixDSeven
单选题If you were to pass a stopper on a wire rope，what should the stopper be made of?（）AWireBManilaCNylonDChain
单选题What does the term end-for-end refer to in regard to a wire towing hawser（）.ACutting off the bitter and towing ends of the wire ropeBSplicing two wire ropes togetherCRemoving the wire rope from the drum and reversing it so that the towing end becomes the bitter endDRemoving the wire rope from the drum and turning it over so that the wire bends in the opposite direction when rolled on a drum
单选题Which statement concerning the lashings of containers with solid bar or wire rope lashings is TRUE? （）AStack weights should be less when using a solid bar lashing as compared to a wire lashingBStack heights may be increased when using a solid bar lashingCStack heights should be reduced when using a solid bar lashingDSolid bars should be used for lashing the first tier only，with wire lashings on the higher tier(s)
单选题It should be noted（）the use of synthetic mooring ropes able to produce sparks by their manipulation is absolutely forbidden on board petroleum tankers and LPG or LNG carriers，or any vessels carrying inflammable substances.AthatBwhichCwhoDthese
单选题The wire ropes and blocks, or pulleys, on a ship are called （）.AfittingsBriggingsCequipmentDdevice
单选题The shaft and spare parts（） should be well greased in order to avoid corrosion.Ain the store roomBin the cylinderCin the scavenge air boxDin the water box
单选题The （） of the main shaft should be measured with a （）.Aclearance；calipersBsinking；bridge gaugeCdiameter；bridge gaugeDclearance；lead wire
单选题The wire ropes and blocks, or pulleys, on a ship are called（）.Athe apparatusBequipmentCriggingsDfittings