(1)图甲中一体积为 1.0×10-4m3实心物体A悬挂在弹簧测力计下,弹簧测力

题型:实验题

问题:

(1)图甲中一体积为 1.0×10-4m3实心物体A悬挂在弹簧测力计下,弹簧测力计读数为2.8N,物体A的密度为             kg/m3(g取10N/kg)。若把物体完全浸没在某种液体中时,弹簧测力计的读数变为1.8N (如图乙),物体在这种液体中受到的浮力是    N。

(2)现有水银(ρ=13.6×103kg/m3)、水(ρ=1.0×103kg/m3)、酒精(ρ=0.8×103kg/m3),把物体A(不改变形状)分别放入上述三种液体中(三种液体足够多),A会在其中的           里中处于漂浮状态。

考点:浮力及阿基米德原理物体的浮沉条件及其应用密度的计算
题型:实验题

《传染病防治法》规定的乙类传染病有()。

A.鼠疫

B.流行性感冒

C.艾滋病

D.肺结核

E.霍乱

题型:实验题

变电一张工作票中,哪三中人不得互相兼任?

题型:实验题

根据国务院2002年9月1日起施行的《医疗事故处理条例》的规定,不属于医疗事故的情况是()。

A.药房等非临床科室过失导致的患者损害

B.医务人员缺乏经验,在诊疗中违反规章造成患者一般性功能障碍

C.医务人员因技术过失造成的医疗技术事故

D.医疗过程中病员及其家属不配合诊疗导致不良后果

E.医护人员在护理中违反诊疗护理规范造成患者人身损害后果

题型:实验题

Are you looking after yourself


1. Running is an excellent exercise. Before you start running, you should warm up first, using slow movements that make all your muscles work. But be careful! If you stretch when your muscles are cold, you might do yourself an injury. Always wear comfortable clothing and make sure your trainers comfortable and in good shape. If you wear shoes that give good support to your whole feet, you will put less pressure on your knees. You should start exercising slowly, at a pace you can keep up for about 15-20 minutes. Try to exercise on soft ground as this will protect your knees and hips from too much stress.
2. It’s OK if you go to bed late occasionally but if you regularly cut down on your sleep, it will soon start to have a bad effect on your skin. If you get a good night’s rest, it will do your appearance the world of good. It is not called beauty sleep for nothing! Lack of sleep can cause acne or dry skin. Make sure you get a good night’s sleep by going to bed and getting up at regular times: don’t burn the candle at both ends. During the day, keep active: if you don’t get enough exercise during the day, you may end up sleepless all night.
3. Did you know that standing, sitting and walking badly can make you look heavier than you really are If we watched the way we sat and stood, it would improve our appearance a great deal. Stand in front of the mirror with your feet apart and your legs straight. Pull in your tummy, check that your ears, shoulders, hips, knees and ankles are in line with each other. You should be feeling and looking better already.
4. Most of us live in large polluted cities. If we got more fresh air, we would look healthier and more attractive. A brisk walk is one of the best things you can do for your circulation and appearance. Walking slowly is useful but a quick pace gets more oxygen into your lungs. So don’t just go for a pleasant stroll, try and find an area that doesn’t have much pollution, and get moving!
5. Many young people feel guilty about eating too much chocolate, and some even say they are addicted to it, though there is no evidence to support this. Chocolate does contain a lot of fat, and therefore any addicts out there would do better to eat less. However, if your diet is balanced, you needn’t feel guilty: eating chocolate in moderation is free — but don’t eat it instead of a proper meal!
A. A good night’s rest
B. More leisure time
C. Good posture
D. Drug addiction
E. More fresh air
F. Balanced diet
G. Tips for a run

Paragraph 3______

题型:实验题

由拍卖人事先公布每批商品的具体情况和拍卖条件,然后由竞买者在规定时间内将密封标书递交拍卖人,由拍卖人选择条件最合适者表示接受而成交的方式叫()

A.增价拍卖

B.减价拍卖

C.密封递价拍卖

D.正式拍卖

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