切向成形车刀工作时,切削刃是逐渐切入和切离工件的,因此切削力较小,加工质量较高。(

题型:判断题

问题:

切向成形车刀工作时,切削刃是逐渐切入和切离工件的,因此切削力较小,加工质量较高。( )

考点:机械基础技能鉴定考核初级机械技能鉴定全国职工职业技能鉴定考核机械基础初级
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MG患者最常见的死亡原因?

题型:判断题

(14分)下图为世界某区域简图,读图完成问题。

(1)分析该地区岛屿众多、海岸线曲折的原因。(4分)

(2)油气开采工业是甲岛目前最主要的工业,说出其有利条件。(4分)

(3)W是世界最南端的城市,每年夏季是旅游旺季,游客发现这里有时候几乎没有黑夜,请解释这种现象的成因。(6分)

题型:判断题

患者,男性,35岁,胃溃疡史5年,3月来上腹无规律疼痛,进食后显著,钡透:胃黏膜增粗,紊乱,胃窦见1.0cm×1.5cm龛影。

提示:如BP为80/60kPa,脉搏110次/分,烦躁,出汗提问:可选择的处理是()

A.快速输血

B.口服去甲肾上腺素

C.快速输盐水

D.快速输葡萄糖

E.应用止血药物

F.急诊内境止血

题型:判断题

镶贴外墙面砖、袖面砖所用的砂浆配比及厚度是()。

A.1:2水泥砂浆,砂浆厚度6~10mm

B.1:3水泥砂浆,砂浆厚度6~8mm

C.1:1:6混合砂浆,砂浆厚度15mm

D.1:2水泥砂浆,砂浆厚度10~15mm

题型:判断题

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

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