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【简答题】
如图所示液压系统,负载F,减压阀的调整压力为Pj,溢流阀的调整压力为Py,Py > Pj。 油缸无杆腔有效面积为A。试分析泵的工作压力由什么值来确定。
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【单选题】They are regarded as chores by both sexes, but fall disproportionately on only one. The latest survey of time use in America suggests women still【C1】______most of the housework, spending on average an...
A.
load
B.
shoulder
C.
remove
D.
ease
【简答题】因为光源发光具有各向异性的特性，所以为了提高光的利用率，应该选择 的方向作为照明方向。
【简答题】I know that most men in the hour of success and prosperity become ____ in spirit and feel excessive pride and haughtiness. (divert, in the same vein, expunge, be associated with, exalt, down-to-earth,...
【单选题】Most men in the hour of success and prosperity become exalted in spirit and feel excessive pride and arrogance.
A.
eminent
B.
exhilarated
C.
salient
D.
sublime
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