做队列研究时,下列哪项不应作为队选择的条件。()A.应选择暴露情况容易查明者 B.便

题型:单项选择题

问题:

做队列研究时,下列哪项不应作为队选择的条件。()

A.应选择暴露情况容易查明者

B.便于随访

C.稳定

D.年龄较大

E.暴露者比例较高

考点:卫生人才评价考试流行病学流行病学题库
题型:单项选择题
已知点P1(x1,y1)、P2(x2,y2)分别在直线l上和在l外,若直线l的方程为f(x,y)=0,则方程f(x,y)-f(x1,y1)-f(x2,y2)=0表示(  )
A.与l重合的直线B.与l平行,且过P1的直线
C.与l平行,且过P2的直线D.同时过P1、P2的直线
题型:单项选择题

根据短文内容,从短文后的选项中选出能填人空白处的最佳选项。其中有两项为多余选项。 (提示:在答题卡上填涂方式:E涂 E, F涂 F, G涂G)(共5小题,每小题2分,满分10分)

Just be yourself

Many of us live our lives but only a few of us have found our true inner self. Why? Is it because we haven’t looked deep within ourselves? These tips will help on your way to becoming one with yourself.

﹡_小题1:__ Negative thinkers lose their confidence and cannot see the hope when it does happen. This may be because they don’t see purpose(毅力) in themselves. Thinking the best out of every situation is a great way to be happy and be one with yourself.__ 小题2:__

﹡Do things that you enjoy. You’ll find you are more yourself because you are doing what you want to do. __小题3:__ When you try a new thing you can build on it and make it a talent. All great famous people started off with hobbies and turned them into something great.

 小题4:_ Doing meditation(冥想) is a great way to empty your mind and become one with yourself. Do around 15-30 minutes’ meditation a day (music or not), to help you relax and find your true inner self.

﹡Love yourself. Every day, list good things you do to help others and think about them carefully again. You will learn to respect yourself and others will also respect you. _小题5:_ .  The more you find good in yourself, the more you will love yourself.

A.Clear your mind.

B.Do some positive thinking.

C.So go out and try new things.

D.Treat yourself as you’d treat your own best friend.E. Look for happiness and do things that bring out your best.

F. Doing acts of kindness will help you become a better person.

G. Remember that no one is perfect and let yourself move forward.

题型:单项选择题

阳极性镀层是当镀层与基体构成微电池时,作为阳极而首先溶解()。

题型:单项选择题

患者男,42岁,因“肝区胀痛1年余,间断咳嗽1个月”来诊。体重无明显变化。查体:肝区可触及一包块,达右肋缘下6cm,质地如软骨,边界清,表面不平,移动性浊音(-)。

确诊为肝泡型包虫病的依据是()

A.患者在牧区工作,有误食虫卵的机会

B.肝区可触及一包块达右肋缘下6cm,质地如软骨

C.腹部CT:肝右叶及左内叶、尾状叶均为一巨大低密度影所占据,右叶中央为更低密度之液性区

D.胸部X线片:右肺上、下叶各一圆形高密度影,直径约2cm

E.ELISA检测泡型棘球蚴抗原Em2结果为弱阳性

F.穿刺肝右叶囊肿吸出黄色混浊液体,为不规则囊肿,无内囊结构

G.术后病理报告为肝泡球蚴病Ⅱ级(增殖性)

题型:单项选择题

安全生产监督管理的基本特征为权威性、强制性和()。

A.持续改进性

B.普遍约束性

C.法定效应性

D.普遍适宜性

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