《煤矿安全规程》规定：作业场所空气中呼吸性粉尘（粉尘中游离SiO2含量＜10%）浓度

阅读下面短文，从A-E五个句子中选出四个填人文中空缺处，使短文内容完整、正确。

       Jane is a bright young woman who comes from a rich and famous family. She goes to a good university.

But her family are so busy that they can hardly find time to be with her. 1.           So she spends a lot of time on

her QQ. She uses the name Linda on QQ and has made lots of friends.

       Last year Jane made a very special friend on QQ. 2.            He and Jane were both interested in rock

music. So it always took them hours to talk happily on QQ. Of course, they wanted to know more about each

other. 3.           He was a tall, good-looking young man with a big, happy smile. As time went by, they became

good friends. 

       4.           Jane asked him to let her go with him so that she could give David a surprise for his birthday. But

when David finally stood before her, she found that her special friend was a twelve-year-old boy named Jim!

A. David sent a picture of himself.

B. In fact, Jane is quite lonely.

C. One day Jane's father was going on a business trip to San Francisco.

D. His name was David and he lived in San Francisco.

E. Jane and David chatted on QQ happily and became good friends.

下面是有关四大高原主要特征的“顺口溜”请将字母对号入座。

A．巍巍苍苍，冰峰千丈；百里悬河，山川相间

B．秃山荒丘，川梁相间；沟谷纵横，地表破残

C．洼地罗列，山川相间；岩溶地表，结构奇巧

D．地坦荡荡，平沙无际；风吹草低，黄羊成群

男，9岁，体重25kg，烧伤3小时入院。烧伤总面积80％，其中深Ⅱ度30％、Ⅲ度50％，伤后无尿，心率150次／分，呼吸36次／分，伤后8小时输液2500ml（其中胶体600ml）后仍无尿。伤后第8天，体温39.8℃，心率148次／分，呼吸36次／分，创面潮湿，焦痂下积脓，感染向邻近健康组织侵袭，血培养阴性。针对无尿首先应（）

A.加快补液速度

B.用利尿剂

C.查血电解质、尿素氮及肌酐

D.进一步询问病史，了解伤前情况

E.检查膀胱区及尿管

007年底，美国爆发了次级债危机。长期以来，有些美资商业银行员工违规向信用等级较低、收入证明缺失、负债较重的人提供贷款，由于房地产市场回落，大量违约客户出现，不再偿还贷款，形成坏账，次级债危机就产生了。危机使信用衍生产品市场大跌，众多机构的投资受损，并进一步致使银行间资金吃紧。危机殃及了许多全球知名的商业银行、投资银行和对冲基金，使长期以来它们在公众心目中稳健经营的形象大打折扣。上述信息包含了（）等风险。

A.市场风险、流动性风险

B.信用风险

C.操作风险

D.声誉风险

车站应急售票系统只安装在（），代售点和其他场所不得安装使用。

A.车站售票窗口

B.车站候车大厅

C.车站预售窗口

D.车站退票窗口