Coppery rudder bush loosen and corrosion of rudder bracket are found frequently when vessel is in repair.

修船中常会遇到铜质舵承出现松动，舵承座孔被腐蚀的情况。

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The tax rates for families, individuals and heads-of households with income below these thresholds will not change and will remain at their existing Bush-era tax bracket levels.

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Bush also adopted a new lower tax bracket for the lowest income workers of 10%, reducing their federal income tax rate by 33%.

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Sperling said that during the Reagan and Bush administrations, Americans in the top fifth income bracket saw their incomes go up 26.4 percent, but there was no income growth for the bottom 60 percent.

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