A band or collar on top end of a boom to which the topping lift, midships guy, and outboard guys are secured, is called the ______.A.collar bandB.guy bandC.pad eye collarD.spider band
A band or collar on top end of a boom to which the topping lift, midships guy, and outboard guys are secured, is called the ______.
A.collar band
B.guy band
C.pad eye collar
D.spider band
相关考题：
In cold, damp weather, the buildup of ice on airplane wings can pose significant aerodynamic problems. Which of the following effects would you expect?A.As ice builds up on the top of the wing, drag increases.B.As ice builds up on the top of the wing, lift increases.C.As ice builds up on bottom of the wing, lift decreases.D.All of the above
Stress on the topping lift of a swinging boom can be reduced by ______.A.rigging a back stayB.raising the boomC.increasing the mechanical advantage of the cargo purchaseD.taking all slack out of the preventer
A band or collar on the top end of a boom to which the topping lift，midships guy，and outboard guys are secured，is called the ______.A.collar bandB.guy bandC.pad eye collarD.spider band
With a given load on the cargo hook，tension in a single span topping lift ______.A.increases as the boom's angle to the horizontal increasesB.is at a maximum when the boom is at a 45° angle to the horizontalC.increases as the boom's angle to the horizontal decreasesD.decreases as the boom's angle to the horizontal decreases
In a married falls rig at the after end of a hatch，a boom is rigged in a fore and aft line through its heel．Stresses on the outboard guy will be LEAST if the guy is made fast at a point ______．A.Abreast the heelB.At right angles to the boom when viewed from aboveC.Aft of the heelD.Forward of the spiderband
What is meant by the term“luffing the boom”of a crane ________．A.Stopping the boomB.Topping or lowering the boomC.Moving the boom left or rightD.All of the above
Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom ________．A.Cargo whipB.Gooseneck fittingC.Spider bandD.Topping lift
Which part provides for transverse control and positioning of a boom in a conventional yard and stay system ________．A.GuyB.ShroudC.SpiderD.Topping lift
The jumbo boom can （）.A、lift heavy cargoB、load and unloadC、join ropes togetherD、lift light cargo
The （）(千斤滑车) can run the gooseneck.A、heavy derrickB、pulley blockC、topping lift blockD、guy tackle
单选题Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom（）.ACargo whipBGooseneck fittingCSpider bandDTopping lift
单选题A flounder plate，on a topping lift，is（）.Aa fairlead blockBa swivel pin for the topping lift blockCa triangular steel plate with a hole at each cornerDthe lower block of a multiple part topping lift
单选题The parts of the derrick are: derrick boom rest, gooseneck, center guy, stay, topping lift, topping lift block and so on.（）A吊杆的部件有：吊杆支架、鹅颈头、中心稳索、支索、千斤索和千斤索滑车组等。B吊杆的部件有：鹅颈头、中心稳索、千斤索、侧稳索、千斤索滑车组和支索等。C吊杆的部件有：中心稳索、侧稳索、吊杆支架、鹅颈头、千斤索、和千斤索滑车组等。D吊杆的部件有：侧稳索、中心稳索、鹅颈头、吊杆支架、千斤索、和千斤索滑车组等。
单选题What is meant by the term TOPPING THE BOOM?（）ALowering the boomBRaising the boomCSpotting the boom over the deckDSwinging the boom athwartships
单选题Stress on the topping lift of a swinging boom can be reduced by（）.Arigging a back stayBraising the boomCincreasing the mechanical advantage of the cargo purchaseDtaking all slack out of the preventer
单选题he heel block is located（）.Aat the base of the boomBat the cargo hookCnear the midships guyDnear the spider band
单选题A vessel has an amidships superstructure. Which location would be most suitable for ondeck stowage of automobiles?（）.AOn top of No.1 hatchBBeside the hatches, forward of the midships houseCOn top of the hatch immediately forward of the midships houseDOn top of the hatch immediately aft of the midships house
单选题A band or collar on the top end of a boom which the topping lift, midships guy, and outboard guys are secured, is called the（）.Acollar bandBguy bandCpad eye collarDspider band
单选题A warp end may be fitted for operating the derrick topping wire which adjusts the derrick （）.AlengthBslackCheightDrotation direction
单选题A vessel has an amidships superstructure. Which location would be most suitable for on-deck stowage of automobiles?（）.AOn top of No.1 hatchBBeside the hatches，forward of the midships houseCOn top of the hatch immediately forward of the midships houseDOn top of the hatch immediately aft of the midships house
单选题A tackle by which the outer end of a boom is raised and lowered is the topping（）.AboomBliftCraiseDtackle
单选题（） may be fitted for operating the derrick topping lift (the wire which adjusts the derrick height).AA capstanBA holdCA warp endDA mooring drum
单选题With a given load on the cargo hook，tension in a single span topping lift（）.Aincreases as the boom's angle to the horizontal increasesBis at a maximum when the boom is at a 45° angle to the horizontalCincreases as the boom's angle to the horizontal decreasesDdecreases as the boom's angle to the horizontal decreases
单选题When viewed from above，the best position for the guy in relation to the boom is（）.AAt a 45° angleBAt right anglesC4 feet aft of the heel of the boomDParallel to the boom
单选题A single heavy wire made up for the topping lift is called a（）.AbaleBspanner wireCbull lineDworking guy
单选题In a married falls rig at the after end of a hatch，a boom is rigged in a fore and aft line through its heel.Stresses on the outboard guy will be LEAST if the guy is made fast at a point（）.AAbreast the heelBAt right angles to the boom when viewed from aboveCAft of the heelDForward of the spiderband
单选题In a married falls rig at the after end of a hatch , a boom is rigged in a fore and aft line through its heel . Stresses on the outboard guy will be least if the guy is made fast at a point（）.Aabreast the heelBat right angles to the boom when viewed from aboveCaft of the heelDforward of the spiderband
单选题Which part provides for transverse control and positioning of a boom in a conventional yard and stay system（）.AGuyBShroudCSpiderDTopping lift