患者男性,67岁。慢性咳嗽、咳痰20余年,进行性气急加重5年。一周前因感冒后病情恶化

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问题:

患者男性,67岁。慢性咳嗽、咳痰20余年,进行性气急加重5年。一周前因感冒后病情恶化入院,血气分析(呼吸空气时)示pH7.30,PaO248mmHg,PaCO265mmHg,予以低浓度氧疗。

本例强调低浓度氧疗是为了避免()。

A.氧中毒

B."吸收性"肺不张

C.CO2潴留加重

D.氧气浪费

E.以上都不是

考点:重症医学(医学高级)重症医学综合练习重症医学综合练习题库
题型:单项选择题 共用题干题

第二节信息匹配(共5小题;每小题2分,满分10分)

请阅读下列应用文及相关信息,并按照要求匹配信息。请在答题卡上将对应题号的相应选项字母涂黑。

以下是六款手机的介绍:

[A]. Nokia-6010

Price: $24.99       Color display: Yes            Wireless Internet ready: Yes

Digital camera: No      2-way text messaging: Yes      Talk time: Up to 330 minutes

Standby time: Up to 240 hours     Weight: 5.08 ounces      Dimensions: 4.68”×1.97”×0.90”

Games: Backgammon, Bowling, Air glide, and Sky diver plus downloadable Java games

[B]. Motorola-C650 (Camera phone)

Price: $99.99           Color display: Yes                Wireless Internet ready: Yes

Digital camera: Yes        2-way text messaging: Yes     Talk time: Up to 210 minutes

Standby time: Up to 215 hours     Weight: 3.10 ounces      Games: Downloadable games

[C]. Samsung-V1660 on Sprint PCS

Price: Free                    Color display: Yes                Wireless Internet ready: Yes

2-way text messaging: Yes     Talk time: Up to 204 minutes   Standby time: Up to 168 hours

Weight: 3.54 ounces             Memory locations: 200 entry phonebook

[D]. Motorola-SLVR-L7

Price: $206.4              Color display: Yes                Wireless Internet ready: Yes

Digital camera: Yes        2-way text messaging: Yes     Talk time: Up to 450 minutes

Standby time: Up to 345 hours     Weight: 3.39 ounces      Dimensions: 4.45”×1.93”×0.45”

Games: Enjoy pre-loaded J2ME games or downloadable games

[E]. Nokia-8010

Price: $124.99            Color display: Yes                Wireless Internet ready: Yes

Digital camera: No        2-way text messaging: Yes     Talk time: Up to 330 minutes

Standby time: Up to 240 hours     Weight: 4.08 ounces      Dimensions: 3.68”×1.27”×0.70”

Games: Downloadable games

[F]. Kyocera-SE47 slider on venison wireless

Price: $149.99            Color display: Yes                Wireless Internet ready: Yes

Digital camera: No        2-way text messaging: Yes     Talk time: Up to 210 minutes

Standby time: Up to 100 hours     Weight: 3.39 ounces 

Memory locations: 200 entry phonebook

阅读下面信息介绍,选出符合各人需求的最佳款式的手机。

46. Susan is at a middle school. Her parents want to buy her a cheaper cell phone without games installed.

47. Mike intends to buy a phone with longer talk time and standby time and it must not be expensive.

48. Jane is at college. She would like to buy a phone which can slide the face up to make a call, and slide it down when you’re done and it has to be light.

49. George would like to have a cheaper phone with digital camera.

50. Tom only buys Nokia. He lost one and he wants to buy another which is smaller.

购机者                        手机款式

46. Susan                               

A.Nokia-6010

47. Mike

B.Motorola-C650(Camera phone)

48. Jane

C.Samsung-V1660 on Sprint PCS

49. George

D.Motorala-SLVR-L750. Tom                                   E. Nokia-8010

F. Kyocera-SE47 slider on venison wireless

题型:单项选择题 共用题干题

8,11,16,( ),32

A.25

B.22

C.24

D.23

题型:单项选择题 共用题干题
如图所示,理想变压器原、副线圈的匝数比为10:1,b是原线圈的中心接头,电压表V和电流表A均为理想电表.从某时刻开始在原线圈c、d两端加上交变电压,其瞬时值表达式为u=220sin100πt(V).下列说法正确的是(  )

A.当单刀双掷开关与a连接时,电压表的示数为22V

B.当单刀双掷开关与b连接时,电压表的示数为11V

C.当单刀双掷开关与a连接,滑动变阻器触头P向上移动的过程中,电压表的示数不变,电流表的示数变大

D.单刀掷开关由a扳向b时(滑动变阻器触头P不动),电压表和电流表的示数均变大

题型:单项选择题 共用题干题

()属于直接滴定法。

A.用盐酸标准溶液滴定氢氧化钠

B.以重铬酸钾为基准物标定硫代硫酸钠

C.用高锰酸钾标准溶液滴定C2O2-4测定钙含量

D.用HCl标准溶液溶解固体碳酸钙,用NaOH标准溶液滴定过量的盐酸测定钙

题型:单项选择题 共用题干题

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