问题 单项选择题

拟对某湿陷性黄土地基采用灰土挤密桩加固,采用等边三角形布桩,桩距1.0m,桩长6.0m,加固前地基土平均干密度ρd=1.32t/m3,平均含水量W=9.0%,为达到较好的挤密效果,让地基土近最优含水量,拟在三角形形心处挖孔预渗水增湿,场地地基土最优含水量Wop=15.6%,渗水损耗系数K可取1.1,每个浸水孔需加水量最接近()m3。

A.0.25

B.0.5

C.0.75

D.1.0

答案

参考答案:A

解析:有效圆直径为:de=1.05l=1.05×1=1.05m

单项选择题
问答题

Most of the idle rich suffer unspeakable boredora as the price of their freedom from drudgery. At times they may find relief by hunting big game in Africa, but the number of such sensations is limited, especially after youth is past. 46. Accordingly more intelligent rich men work nearly as hard as if they were poor, while rich women mostly keep themselves busy with innumerable trifles of whose earth- shaking importance they are firmly persuaded.

47. Work is desirable as a preventive of boredom, for the boredom a man feels when doing necessary though uninteresting work is as nothing in comparison with the boredom he feels when having nothing to do. With this advantage of work another is associated, namely that it makes holidays much more delicious when they come. 48. Provided a man does not have to work so hard as to impair his vigor, he is likely to find far more zest in free time than an idle man could possibly find.

The second advantage of most paid work and of some unpaid work is that it gives chances of suecess and opportunities for ambition. In most work success is measured by income and while our capitalistic society continues, this is inevitable. It is only where the best work is concerned that this measure ceases to be the natural one to apply. 49. The desire that men feel to increase their income is quite as much a desire for success as for the extra comforts that a higher income can procure. However dull work may be, it becomes bearable if it is a means of buihliug up a reputation, whether in the world at large or only in one’ s own circle. Continuity of purpose is one of the most essential ingredients of happiness in the long run, and for most men this comes chiefly through their work.

50. The satisfaction of killing time and of affording some outlet, however modest, for ambition, belongs to most work, and is sufficient to make even a man whose work is dull happier on the average than a man who has no work at all. But when work is interesting, it is capable of giving satisfaction of a far higher order than mere relief from tedium. The kinds of work in which there is some interest may be arranged in a hierarchy. I shall begin with those which are only mildly interesting and end with those that are worthy to absorb the whole energies of a great man.

49. The desire that men feel to increase their income is quite as much a desire for success as for the extra comforts that a higher income can procure.