A （）(重吊杆)is used for lifting long heavy cargo.A、derrickB、craneC、jumbo boornD、special crane
A （）(重吊杆)is used for lifting long heavy cargo.
- A、derrick
- B、crane
- C、jumbo boorn
- D、special crane
相关考题：
An automobile sling is used for ________A.lifting aircraft and helicoptersB.lifting any kinds of cargoC.lifting the heavy boxesD.lifting cars and trucks
The universal lifting spreader is a lifting device used on ______．A.dockside container cranesB.shipboard container cranesC.straddle trucksD.straddle cranes
The preventer guy，as used on a conventional yard and stay rig，______．A.Is rigged at an angle of 70° to 90° from the guy it assistsB.Takes the strain imposed on the schooner guy when burtoning cargoC.Is rigged when lifting cargo that exceeds the SWL of a single whipD.Should take the strain if the regular guy parts
The jumbo boom can lift heavy cargo, the gantry crane can hoist containers.（）A、重吊杆吊重货和集装箱货。B、龙门吊能起吊重件货，重吊杆能起吊集装箱。C、重吊杆能起吊重件货，龙门吊能起吊集装箱。D、龙门吊吊重货和集装箱货。
单选题The hoist line primarily used for lifting personnel on ship cranes is called the（）.Apersonnel lineBwhip lineCmain hoist lineDpendant
单选题The jumbo boom can lift heavy cargo, the gantry crane can hoist containers.（）A重吊杆吊重货和集装箱货。B龙门吊能起吊重件货，重吊杆能起吊集装箱。C重吊杆能起吊重件货，龙门吊能起吊集装箱。D龙门吊吊重货和集装箱货。
单选题重吊杆用于吊大的重件。（）AHeavy derrick is used for lifting large heavy cargo.BDerrick is used for lifting large heavy cargo.CHeavy derrick is used for lifting dry bulk cargo.DDerrick is used for lifting dry bulk cargo.
单选题轻型单吊杆在吊货滑车组滑轮数及吊重相同的条件下，吊杆所受轴向压力的大小主要取决于：（）A吊杆的仰角B吊杆长度与吊杆承座至千斤索眼板座之间高度的之比大小C吊杆自重D吊货滑车组滑轮的摩擦力
单选题The preventer guy，as used on a conventional yard and stay rig，（）.Ais rigged at an angle of 70°to 90°from the guy it assistsBtakes the strain imposed on the schooner guy when burtoning cargoCis rigged when lifting cargo that exceeds the SWL of a single whipDshould take the strain if the regular guy parts
单选题A spreader bar is used to（）.Aincrease the lifting capacityBincrease the lifting radiusCprotect the slingsDprotect the upper part of a load
单选题吊杆式起重设备按结构和使用形式的不同可分为（）几种。 ①、轻型单吊杆；②、轻型双吊杆；③、普通型重吊；④、“V”型重吊；⑤、重型双吊杆A①、②、④、⑤B①、②、③、⑤C①、②、③、④D②、③、④、⑤
单选题吊杆按结构和使用形式不同可分为（） ①轻型单吊杆； ②轻型双吊杆； ③普通重型吊杆； ④“V”型重吊； ⑤重型双吊杆。A①②④⑤B①②③⑤C①～④D②～⑤