固溶强化的基本原理是（）。A、晶格类型发生了变化 B、晶格发生了畸变 C、组元之间发生了

气体灭火系统储存装置的安装位置应符合设计文件的要求。检查数量：()检查。检查方法：观察检查、用尺测量。

A.10%抽样

B.20%抽样

C.50%抽样

D.全数

下列词语中，没有错别字的一组是

A．熨帖晦涩山青水秀防民之口胜于防川

B．肄业攀缘俯拾即是不入虎穴，焉得虎子

C．签暑暮霭溘然长逝桃李不言，下自成蹊

D．散漫深邃卓而不群毕其功于一役

The blue tits(山雀) have been inspecting the nest-box again this year. The male is the house-hunter but the female will make the final choice. He lands at the hole and turns his head to expose his white cheeks as a signal to attract the female from where she has been feeding.

Among many birds that nest in holes, the male has a light-coloured patch on its plumage(鸟羽) which acts as signal for drawing the female’s attention to a suitable nesting-place. Unlike the blue tit, the redstart(红尾鸲) may be only the male that strikingly coloured and the female is not beautiful.

A few years ago I was lucky enough to spot a pair of redstarts in action in a Walsh wood. The male was leading an interested female to holes that he had previously(先前) checked out. He sat at the entrance of each hole and put his head on to show off his white forehead, or his head in to reveal(显露) his tail.

If the female failed to react to his visual signals, the male sometimes sang for extra effect, while gliding towards her on spread wings and tail. Once the female accepts by following the male through the hole the displays stop, you must be at the right place at the right time to watch them.

小题1:How do the blue tits choose their nest?

A．They choose their nest together.

B．The male chooses their nest.

C．The house-hunter chooses their nest.

D．The female chooses their nest.小题2:The writer was lucky to see ________.

A．how the male made his tricks

B．how an interested female played with the male happily

C．what the male displayed and won the female

D．that the male tried his best but failed to attract the female小题3:You can spot a pair of redstarts in a Walsh wood ________.

A．at any time

B．regularly

C．in April

D．occasionally小题4:The writer is probably ________.

A．a bird expert

B．a bird-hunter

C．a bird raiser

D．a scientist

抗溶血性链球菌溶血素“O”增高，主要表明：（）

A．患风湿热

B．正患溶血性链球菌感染

C．曾患溶血性链球菌感染

D．正患急性肾炎

E．正患猩红热

项目招标是信息工程项目实施的重要工作环节，招标形式包括（）

A.委托招标

B.自行组织招标

C.邀请招标

D.直接政府采购