所谓______是指从动件在推程前半个行程作等加速运动,后半个行程作等减速运动,且通

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问题:

所谓______是指从动件在推程前半个行程作等加速运动,后半个行程作等减速运动,且通常等加速度与等减速度的绝对值相等。

考点:自学考试工学自考机械设计基础自考题
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急性心肌梗死患者,除下列哪种心律失常外,均需立即报告医生,紧急处理()

A.室性期前收缩呈R on T现象

B.多源性室性期前收缩

C.频发室性期前收缩

D.房性期前收缩

E.心室纤颤

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什么是一类压力容器?

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Shopping for clothes is not the same experience for a man as it is for a woman. A man goes shopping because he needs something. He knows what he wants, and his purpose is to find it and buy it, the price is a less important consideration. All men simply walk into a shop and ask the assistant for what they want. If the shop has it, the salesman immediately produces it, and the business of trying it on is done at once. All being well, the bargain (交易) can be and often is completed in less than five minutes, with hardly any chat and to everyone’s satisfaction.

For a man, slight problems may begin when the shop does not have what he wants. Then the salesman tries to sell the customer (顾客) something else he offers the nearest he can to the thing required. He usually says, "I know this jacket is not the style (式样) you want, sir, but would you like to try it on for size It happens to be the color you wanted." Few men have patience with this treatment, and the usual reply is: "This is the right colour and may be the right size, but I should be wasting my time and yours by trying it on."

Now how does a woman go about buying clothes She does so in the opposite way. She has never fully made up her mind what she wants, and she is only "having a look round". She is always open to persuasion, indeed she considers of great importance what the saleswoman tells her, even what her friends tell her. She will try on any number of things. Highest in her mind is the thought of finding something that everyone thinks suits her. Most women have an excellent sense (判断力) of value when they buy clothes. They are always trying to find an unexpected bargain. Faced with a roomful of dresses, a woman may easily spend an hour going from one counter (柜台) to another before selecting the dresses she wants to try on. It takes a great deal of time but gives great joy. Most dress shops supply chairs for the waiting husbands.

What does the passage tell us about women shoppers for clothes().

A. They welcome suggestions from anyone.

B. Women seldom consider buying cheap clothes.

C. Women often buy things without thinking.

D. They listen to advice but never take it.

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放开“单独二胎”是我国生育政策的重大调整完善,顺应了群众期盼,有利于社会和谐稳定。专家表示,放开“单独二胎”可调节人口结构,缓解人口老龄化,不会导致人口暴涨。这说明()

①联系是普遍的,任意事物之间都是相互联系的

②联系是客观的,但人们可以根据自身需要创造联系

③要着眼于事物的整体性,注意内部结构的优化趋向

④联系是多样的,要一切以时间、地点、条件为转移

A.①②

B.②④

C.①③

D.③④

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走向长壁采煤法是长壁工作面沿走()进的采煤方法

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