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单选题
What does “evel-luffing” accomplish during crane operations（）.
A
It prevents the load from swinging when the boom level is adjusted
B
Less power is needed when topping the boom with a load on the hook
C
It maintains the height of the load above the deck
D
All of the above
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更多 “单选题What does “evel-luffing” accomplish during crane operations（）.A It prevents the load from swinging when the boom level is adjustedB Less power is needed when topping the boom with a load on the hookC It maintains the height of the load above the deckD All of the above” 相关考题
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What does “evel-luffing” accomplish during crane operations ________．A.It prevents the load from swinging when the boom level is adjustedB.Less power is needed when topping the boom with a load on the hookC.It maintains the height of the load above the deckD.All of the above
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