雌甾-1，3，5（10）-三烯3，17β-二醇的结构式是（） A. B. C. D.

对下列四字词语中的错别字修改错误的一项是

A．刹时/霎霎那/刹 势不可当/挡一幅笑脸/副

B．势均利敌/力悬梁刺骨/股卑恭屈膝/躬翻了一翻/番

C．垂躬而治/拱垂拱而制/治委屈求全/曲棉里藏针/绵

D．录录无为/禄落英宾纷/缤抨的一声/砰砰击/抨

简述国内外新型离心机的类型及应用特点。

阅读下面这首唐诗，完成题目。(11分)

题武关^①

杜　牧

碧溪留我武关东，一笑怀王迹自穷。

郑袖娇娆酣似醉，屈原憔悴去如蓬。

山樯谷堑依然在，弱吐强吞尽已空。

今日圣神家四海^②，戍旗长卷夕阳中。

【注】 ①武关：在今陕西省丹凤县东南，战国时为秦国的南关。楚怀王绝齐亲秦，入武关为秦伏兵所执，客死秦国。②圣神：神圣天子；四海：天下统一。

小题1:诗人“笑”怀王什么？为什么“笑”？请简要分析。(5分)

答：________________________________________________________________________

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小题2:诗中运用了多种修辞手法，请任选两种加以赏析。(6分)

答：________________________________________________________________________

________________________________________________________________________

Observe that for the programmer, as for the chef, the urgency of the patron（顾客）may govern the scheduled completion of the task, but it cannot govern the actual completion. An omelette（煎鸡蛋）, promised in two minutes, may appear to be progressing nicely. But when it has not set in two minutes, the customer has two choices-waits or eats it raw. Software customers have had (1)choices. 　　

Now I do not think software (2) have less inherent courage and firmness than chefs, nor than other engineering managers. But false (3) to match the patron's desired date is much more common in our discipline than elsewhere in engineering. It is very (4)to make a vigorous, plausible, and job risking defense of an estimate that is derived by no quantitative method, supported by little data, and certified chiefly by the hunches of the managers. 　　

Clearly two solutions are needed. We need to develop and publicize productivity figures, bug-incidence figures, estimating rules, and so on. The whole profession can only profit from (5)such data. Until estimating is on a sounder basis, individual managers will need to stiffen their backbones and defend their estimates with the assurance that their poor hunches are better than wish derived estimates.

空白（3）处应选择（）

A.tasks

B.jobs

C.works

D.scheduling

每艘船舶必须配置应急时每位船员应执行任务的（）。

A.计划

B.应变部署表

C.程序

D.说明