加水的最大允许压力是多少()A.25psi; B.50psi; C.75psi。

题型:单项选择题

问题:

加水的最大允许压力是多少()

A.25psi;

B.50psi;

C.75psi。

考点:民用航空器维修执照考试A320系列飞机MEA320系列飞机ME题库
题型:单项选择题

(共用题于)38岁孕妇,妊3产0,自然流产2次,现孕16周。

要排除胎儿畸形,不应做以下哪项检查

A.羊水穿刺,染色体检查

B.甲胎蛋白测定

C.B超检查

D.常规腹部平片

E.必要的羊水生化测定

题型:单项选择题

下面( )不是基金份额持有人必须承担的义务。

A.承担基金亏损或终止的全部责任

B.缴纳基金认购款项及规定的费用

C.在封闭式基金存续期间,不得要求赎回基金份额

D.遵守基金契约

题型:单项选择题

黄体发育达最盛期是排卵后的:

A.5~6天

B.7~8天

C.8~9天

D.9~10天

E.10~11天

题型:单项选择题

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.

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.

题型:单项选择题

如果一个人的食物有1/2来自绿色植物,1/4来自小型肉食动物,1/4来自植食性动物,假如能量传递效率为10%。食物链关系如图所示,那么该人每增加1千克体重,约需消耗植物()

A.10千克

B.28千克

C.100千克

D.280千克

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