A tackle is "two blocked" when the blocks are ______.A.equally sharing the loadB.jammed togetherC.as far apart as possibleD.rove to the highest mechanical advantage
A tackle is "two blocked" when the blocks are ______.
A.equally sharing the load
B.jammed together
C.as far apart as possible
D.rove to the highest mechanical advantage
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单选题What is meant by the term two-blocked（）.AThe bottom block touches the top blockBThe line has jumped the sheavesCThere are turns in the fallDYou have two blocks
单选题The standing part of a tackle is（）.Aall the fall except the hauling partBthe hook that engages the weight to be movedCthat part to which power is appliedDthat part of the falls made fast to one of the blocks
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单选题A small light tackle with blocks of steel or wood that is used for miscellaneous small jobs is called a（）.Asnatch blockBthreefold purchaseChandy-billyDchockablock
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单选题A tackle is “two blocked” when the blocks are（）.Aequally sharing the loadBjammed togetherCas far apart as possibleDrove to the highest mechanical advantage