加工下述零件,以B面定位,加工表面A,保证尺寸10+0.2mm,试画出尺寸链并求出工

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问题:

加工下述零件,以B面定位,加工表面A,保证尺寸10+0.2mm,试画出尺寸链并求出工序尺寸L及公差。

考点:机械工程师第九章机械制造基础第九章机械制造基础题库
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下面这幅西班牙名画被认为是20世纪西方精神世界的一个缩影,它名为

[ ]

A.《格尔尼卡》

B.《记忆的永恒》

C.《和平鸽》

D.《最后的晚餐》

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No fight can end, and no friendship can move on, until everyone says these little words. I’m sorry Sometimes, though, they can be difficult to say.  1 

It is not about winning.

Friendships aren’t like the Super Bowl, and there should never be a winner and a loser. When you start fighting with a friend, it may feel important that you “win” the fight by proving you’re right and he is wrong, or by making him be the first to apologize.

In reality, you’ll both lose if you let your fight ruin your friendship, and you’ll both win if you find a way to heal it.

2   

You may have heard the expression “His pride stood in the way”. It is usually used to describe a person who is so determined to be “right” that he lets an opportunity for happiness pass him by forever.3  Remember: as time goes on, we usually forget who was right and who was wrong in a disagreement, and only remember the sadness of losing a friend.

Take the first step.

Are you sick of fighting? Do you think this fight is just not important enough to ruin your friendship?  you don’t have to take full responsibility for starting the fight, or even say that your feelings were wrong. But you should find something you did or said that’s worth apologizing for. Maybe you’re sorry that you let the fight go for so long, or that you overreacted to something your friend did. If you say you’re sorry, it’s like an invitation for your friend to do the same.  5  

A.Then try to be the first to apologize.

B.Stop thinking about your pride.

C.It’s about taking some responsibility for the argument.

D.Don’t let this happen to a friendship you care about.E. Here are some things to keep in mind.

F. There are some special cases when you shouldn’t be the one to apologize first.

G. Once you’ve both said it, you’ll both feel a million times better.

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读图,回答问题

(1)图中A处为著名的____________海峡,它是连接________洋与_________洋的海上通道。

(2)图中航线①从我国沿海出发,经过A海峡后,向西经_________运河,可到达________海(B处)。

(3)图中航线②可以从______地区(C处)运输大量的______(矿产)到东亚的_______(国家)

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化工厂危险程度分级法是以化工生产、贮存过程中的物质、物量指数为基础,用有关系数修正后求出工厂的危险等级。在厂房修正系数中,不予考虑的因素是()。

A.厂房结构

B.厂房高度

C.厂房耐火等级

D.泄压面积

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口腔癌预防不包括()

A.健康教育,提高对危险因素的认识

B.停止吸烟饮酒

C.政府应制定控制烟酒大量使用的法规

D.专业人员应尽早治疗有根尖病变的牙齿

E.改变不良口腔卫生习惯

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