女性,50岁。间断性夜间上腹不适2年余,2天前突发右上腹绞痛,无他处放射,伴恶心。查

题型:单项选择题

问题:

女性,50岁。间断性夜间上腹不适2年余,2天前突发右上腹绞痛,无他处放射,伴恶心。查体:体温:39.0℃,巩膜稍黄染,右上腹肌紧张,压痛,肠鸣音减弱,WBC20×109/L,血清淀粉酶120温氏单位。最可能的诊断为()

A.急性胰腺炎

B.高位急性阑尾炎

C.胆道蛔虫症

D.急性化脓性胆囊炎

E.溃疡病穿孔

考点:内科住院医师急诊科急诊科题库
题型:单项选择题
两列简谐横波的振幅都是20cm,传播速度大小相同.实线波的频率为2Hz,沿x轴正方向传播;虚线波沿x轴负方向传播.某时刻两列波在如图所示区域相遇,则(  )

A.在相遇区域会发生干涉现象

B.平衡位置为x=6m处的质点此刻速度为零

C.平衡位置为x=8.5m处的质点此刻位移y>20cm

D.从图示时刻起再经过0.25s,平衡位置为x=5m处的质点的位移y<0

题型:单项选择题

()含挥发分最高。

A、褐煤

B、烟煤

C、无烟煤

D、焦炭

题型:单项选择题

地壳中含有大量的硅元素,它的含量仅次于______元素.高纯度的单质硅是计算机的核心材料,工业上制取单质硅的第一步反应的化学方程式为:SiO2+2C

 点燃 
.
 
CSi+2R,其中R的化学式为______;该反应属于基本反应类型中的______反应.

题型:单项选择题

根据短文填空。

     Over the centuries, people have always wondered about the future. Some like to read

fantasy stories and imagine what the world will be like in 10, 50 or even 1,000 years' time.

1.________ write about the future themselves. In the 18th and 19th century, especially the

2.________, the most common theme in science fiction novels was the future. Some authors

even predicted things 3.________have since happened, for example, landing on the moon!

4.________ for some people, thinking about the future is not just5.________ fun. They plan

the future of the world for 6.________ living. These people are called futurologists.

     In the next few years, computers will become handier. Shortly all of us are going to use

our voices to give instructions to computers. We'll be able to download any file or update our

computers just 7.________saying a few words.

     By the year 2015, the clothing industry will have produced new types of material that will

remain stainless no mater 8.________ you spill on them. Red wine stains will no longer ruin

clothes.

题型:单项选择题

全局变量必须在 【14】 模块中定义。

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