试题与答案

男性,17岁,检查发现心脏杂音四年,活动时心慌、气促三年。血压130/20mmHg,

题型:单项选择题

题目:

男性,17岁,检查发现心脏杂音四年,活动时心慌、气促三年。血压130/20mmHg,主动脉瓣区舒张期杂音,心脏正位片如图所示,该患者最可能是何种心脏病()

A.二尖瓣狭窄

B.主动脉瓣狭窄

C.二尖瓣关闭不全

D.主动脉瓣关闭不全

E.三尖瓣关闭不全

答案:

参考答案:D

试题推荐
题型:阅读理解

阅读理解。

     Bugs Bunny's Hoping Carrot Hunt

     In this game you are Bugs Bunny. and your goal is to reach the finish line. A carrot truck has spilled its

cargo! Gather as many carrots as you can, and when you get the big carrot, you'll be able to jump even

higher!

     Instructions: Use the mouse to move Bugs left and right, and click to jump a gap while gathering

carrots.

     Category: Action

     Mushroom Madness

     You are in charge of protecting several farms. It's up to you to make sure the mushrooms there reach

maturity before the animals in the forest get their hands on them. Use your swatter (苍蝇拍) to fight off

anything that comes near them; use heavier weapons if necessary.

Instructions: Slap any creature that comes near your mushrooms. Use the mouse to control the swatter. If

you see a "power up", click to use it. Collect coins to buy upgrades after each level.

     Category: Action

     Rudolph's Kick and Fly

     Santa's little helpers have worked all year preparing for Christmas. When Santa finally leaves to deliver his presents, the elves (精灵) head down to the snowfields with Rudolph, the reindeer, to play their

favorite game: Kick and Fly!

     Instructions:

     1.Use the mouse to aim, and click to launch an fly.

     2.While in the air, click again to catch, and to gain extra height.

     3.The goal is to collect as many Christmas ornaments (装饰物) possible, and get 10 points for each

one.

     Tips: If you're heading towards an obstacle, be sure to avoid it!

     Category: Action                                    

     Click Flick

     Your mission is to save chicks falling from the sky. Use your trampoline (蹦床) to bounce them up

and direct them into a nest. But hurry-if you don't, many chicks will fall and lose their lives. There will be

falling bombs, worms, nuts and eggs and you can get extra points by collecting the worms and nuts. Save

the amount of chicks shown to unlock the next level!

     Instructions: Move the chicks left and right using keys or the mouse.

     Category: Adventure

1. The main purpose of the passage is to _____.

A. tell us different categories of games

B. ask us to decide which game is the best

C. introduce several interesting computer games

D. let us evaluate whether we are interested in the games

2. If a player has collected some worms and nuts, he _____.

A. is playing Mushroom Madness    

B. will lose the game quite soon

C. will get 10 points for each one      

D. will get extra points and get ahead

3. In which game are there obstacles you must avoid?

A. Bugs Bunny's Hopping Carrot Hunt.   

B. Mushroom Madness.

C. Rudolph's Kick and Fly.              

D. Click Flick.

查看答案
题型:单项选择题

某机电安装工程公司承担了某机械厂的机电安装工程任务,其中最主要的一项工程是厂区的架空管道工程。机电公司的几个工人在下班时擅自开动起重机进行吊装管道,由于对起重机的使用要求不太了解,操作出现失误,滑轮组钢丝绳被拉断,管道下滑,导致一名工人倒下。经调查,是因为机电公司安全制度不够完善,且没有在吊装前对基础进行试验和验收。

一般按经验公式,缆风绳的初拉力取工作拉力的( )。

A.10%~15%

B.15%~20%

C.20%~25%

D.25%~30%

查看答案
微信公众账号搜索答案