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单选题
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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The line has jumped the sheavesC
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the hook that engages the weight to be movedC
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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（）.A
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threefold purchaseC
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The modified blocks would be written to the data files.B
The modified blocks would be written to the temp files.C
The modified blocks would be written to the control file.D
The modified blocks would be written to the redo log files.E
The modified blocks would be written to the archived redo log files.F
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单选题A block and tackle is rove to advantage. This means that the（）.A
blocks have been overhauledB
hauling parts of two tackles are attachedC
hauling part leads through the movable blockD
hauling part leads through the standing block
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