The （）(千斤滑车) can run the gooseneck.A、heavy derrickB、pulley blockC、topping lift blockD、guy tackle
The （）(千斤滑车) can run the gooseneck.
- A、heavy derrick
- B、pulley block
- C、topping lift block
- D、guy tackle
相关考题：
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 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 block that can be opened at the hook or shackle end to receive a bight of the line is a _____.A.bight blockB.gin blockC.heel blockD.snatch block
The jumbo boom can （）.A、lift heavy cargoB、load and unloadC、join ropes togetherD、lift light cargo
The （）(双杆联吊) is that two booms are used with a single hook.A、derrickB、union purchaseC、topping lift blockD、crane
The（）(千斤索) is a wire used to take the weight off.A、light derrickB、union purchaseC、topping liftD、heavy derrick
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。
What is the disadvantage for air transportation? （）A、Quick but not safeB、Less frequencyC、It can’t lift heavy goodsD、The highest cost in all transport modes
（）is the disadvantage for air transportation?A、Quick but not safeB、Less frequencyC、It can’t lift heavy goodsD、the highest cost in all transport modes
单选题（）is the disadvantage for air transportation?AQuick but not safeBLess frequencyCIt can’t lift heavy goodsDthe highest cost in all transport modes
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The （）(千斤滑车) can run the gooseneck.Aheavy derrickBpulley blockCtopping lift blockDguy tackle
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What is the disadvantage for air transportation? （）AQuick but not safeBLess frequencyCIt can’t lift heavy goodsDThe highest cost in all transport modes
单选题A single heavy wire made up for the topping lift is called a（）.ABaleBSpanner wireCBull lineDWorking guy
单选题The （）(重吊杆) can lift heavy cargo.Aheavy cargo derrickBheavy deckCjumbo boomDheavy block