依据国际指南,成人胸外心脏按压与人工呼吸的比值是() A.5:1 B.15:1 C.

题型:单项选择题 A1型题

问题:

依据国际指南,成人胸外心脏按压与人工呼吸的比值是()

A.5:1

B.15:1

C.15:2

D.30:1

E.30:2

考点:中医执业助理医师常见急危重症常见急危重症题库
题型:单项选择题 A1型题

《我们是 * * 主义接班人》作为新队歌已经唱响()年了。

A.43

B.53

C.33

D.23

题型:单项选择题 A1型题

下列几种估测最符合实际情况的是                                              

A.人步行的速度约为5m/s

B.全新的2B铅笔长约18cm

C.人体感觉最舒适的温度约为37oC

D.一张试卷厚度的大约1mm

题型:单项选择题 A1型题

Increasingly, the development of tourism is seen to have an effect on the environment. Erosion (磨损) is one problem. The steps and stones of major popular (51) like Shakespeare’s birthplace or Stonehenge (巨石阵) are literally being worn away by millions of foreign feet. The (52) in the case of Britain’s best known prehistoric monument has been to use railings to keep visitors at a distance. Such measures can hardly be (53) in the house of the Bard, however, where tourists want to enter the actual building.

Overcrowding in cities, towns and villages is (54) problem. Traffic jams are an outcome. In narrow roads, tourist vehicles cause congestion. (55) traders and residents cannot get around to do their work. Car parks fill up, (56) strangers park their cars where they can: in streets, across gateways, in lay-bys, or even in (57) driveways. This causes obstruction. The sheer weights of in-comers can be a hazard. Thus Venice, a city built for half a million inhabitants, is (58) by another half million who populate the city daily in the tourist (59) —eight million visits each year. The mayor recently decided to (60) visitors to 90,000 a day. the only way to save the city from overcrowding.

53().

A.adopted 

B.adapted 

C.resorted 

D.applied

题型:单项选择题 A1型题

证券市场需求的影响因素有()。

A.宏观经济环境

B.政策因素

C.居民金融资产结构的调整

D.机构投资者的培育和壮大

题型:单项选择题 A1型题

在下降过程中,中耳气压性耳压发生的主要原因是().

A.随着外界气压的增高,气体因单向活门作用不能进入咽鼓管,使腔内形成较大负压所致;

B.随着外界气压的增高,气体因单向活门作用不能进入咽鼓管,使腔内形成较大正压所致;

C.随着外界气压的降低,气体因单向活门作用不能进入咽鼓管,使腔内形成较大负压所致。

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