正达美,有英语短语问题要向你请教!

((1-62.5%)x+270)/x= 6/7
6x=7*(1-62.5%)x+270)
6x=2.625x+1890
6x-2.625x=1890
x=560

A、因为船在静水中的速度小于河水的流速，由平行四边形法则求合速度不可能垂直河岸，小船不可能垂直河岸正达对岸．因此，A选项正确．
B、C：当船的静水中的速度垂直河岸时渡河时间最短： t min =
d
v 1 =
150
3 s=50s ∴选项B、C错误．
D、船以最短时间50s渡河时沿河岸的位移：x=v ₂ t _min =4×50m=200m，即到对岸时被冲下200m，∴选项D正确．
故选：A、D．

平衡计分卡以企业战略实现为导向,是增强企业战略执行力最有效的战略管理工具.本文以正达企业为例,研究企业基于平衡计分卡的绩效管理的应用.首先,通过对企业的SWOT分析,制定企业的战略目标并绘制战略地图；然后,从平衡计分卡的四个维度分解出实现企业战略目标的指标,并确定出各指标的衡量标准；最后根据指标制定实现战略目标的行动方案.企业通过对平衡计分卡的应用,不仅提高了业务收入、降低了成本支出,同时也增强了员工的个人能力、提升了员工的积极性,优化了企业的管理流程和业务流程,保证了企业的战略实现和可持续发展.
Balanced scorecard uases the enterprise strategy implementation as a guidance,is a most effective strategy management tool helping to enhance strategic execution of the enterprise.This paper uses "CHING TAT ENTERPRISE" as an example,to study the enterprise's application of performance management based on the balanced scorecard.First of all,through the enterprises's SWOT analysis,formulate the enterprise's strategic goals and draw out the strategic map,then,from the 4 dimension of the balanced scorecard,to resolve the enterprise strategic targets realization and determines the measure of each indicator.Finally,in accordance to the action plan of the target drawn up strategic goals realization,through the application of the balanced scorecard,the enterprise would not just increase its business income,reducing of its overhead costs but at the same time,it could also enhance individual worker's ability,improving their initiative,optimizing the enterprise's management and business proccess,ensuring the realization of the enterprise's strategy and sustainable development.
已人手工夫替你翻译好了,

A、因为船在静水中的速度大于河水的流速，由平行四边形法则求合速度有可能垂直河岸，故小船有可能垂直河岸到达对岸．因此，A错误；
B、C：当船的静水中的速度垂直河岸时渡河时间最短：t _min =
d
v c =
160
4 s=40s，故BC正确；
D、船以最短时间40s渡河时沿河岸的位移：x=v ₂ t _min =3×40m=120m，即到对岸时被冲下120m，故D错误；
故选：BC．