心脏骤停时最常见的心律失常是A.房扑 B.房颤 C.室颤 D.室上性心动过速 E.室

题型:单项选择题

问题:

心脏骤停时最常见的心律失常是

A.房扑

B.房颤

C.室颤

D.室上性心动过速

E.室性心动过速

考点:心血管内科(医学高级)心血管内科学3
题型:单项选择题

下面关于查询描述正确的是 ______。

A.可以使用CREATE VIEW打开查询设计器

B.使用查询设计器可以生成所有的SQL查询语句

C.使用查询设计器产生的SQL语句存盘后将存放在扩展名为QPR的文件中

D.使用DO语句执行查询时,可以不带扩展名

题型:单项选择题

只有在组距中值两侧呈对称分布,才能使用组中值作为该组数据的代表值

题型:单项选择题

关于禁水试验正确的是()

A.如患儿烦渴加重并出现严重脱水症状或体重下降超过10%,应停止试验

B.观察患儿在细胞外渗透压增高时的尿浓缩功能的能力

C.尿崩症患儿在禁水试验中,每小时尿量减少明显

D.正常儿童尿比重逐渐上升,尿渗透压可达800mmol/L

E.尿崩症患儿血钠上升超过145mmol/L

题型:单项选择题

Shopping for clothes is not the same experience for a man as it is for a woman. A man goes shopping because he needs something. He knows what he wants, and his purpose is to find it and buy it, the price is a less important consideration. All men simply walk into a shop and ask the assistant for what they want. If the shop has it, the salesman immediately produces it, and the business of trying it on is done at once. All being well, the bargain (交易) can be and often is completed in less than five minutes, with hardly any chat and to everyone’s satisfaction.

For a man, slight problems may begin when the shop does not have what he wants. Then the salesman tries to sell the customer (顾客) something else he offers the nearest he can to the thing required. He usually says, "I know this jacket is not the style (式样) you want, sir, but would you like to try it on for size It happens to be the color you wanted." Few men have patience with this treatment, and the usual reply is: "This is the right colour and may be the right size, but I should be wasting my time and yours by trying it on."

Now how does a woman go about buying clothes She does so in the opposite way. She has never fully made up her mind what she wants, and she is only "having a look round". She is always open to persuasion, indeed she considers of great importance what the saleswoman tells her, even what her friends tell her. She will try on any number of things. Highest in her mind is the thought of finding something that everyone thinks suits her. Most women have an excellent sense (判断力) of value when they buy clothes. They are always trying to find an unexpected bargain. Faced with a roomful of dresses, a woman may easily spend an hour going from one counter (柜台) to another before selecting the dresses she wants to try on. It takes a great deal of time but gives great joy. Most dress shops supply chairs for the waiting husbands.

When a man cannot get what he wants, he ().

A. buys something of the same color in a slightly different style

B. usually does not buy anything

C. will try on some other clothes of the same style

D. wastes no time in buying something else

题型:单项选择题

纯种黄色圆粒(YYRR)豌豆和绿色皱粒豌豆(yyrr)杂交(两对基因自由组合),F1自交,将F2中绿色圆粒豌豆再种植(自交),则F3的绿色圆粒豌豆占F3的()

A.5/6

B.1/4

C.1/2

D.1/8

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