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我们在日常生活学习中,总是要用到很多产品,这些产品总有一些缺点让我们使用时,感到一定程度的不方便,请在你身边选择一种存在这种问题的产品,进行说明分析,并提出其理想解。 要求:1.请先上传该产品的照片,并说明其问题或缺点; 2.提出的理想解应该依据正确的科学原理,可能短时间内无法实现,但必须建立在合理分析设想的基础上; 3.对理想解的说明以文字为主,配图时需要加上必要的说明。 4.理想机器、理想过程、理想方法、理想物质四者当中,至少实现一种。
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举一反三
【单选题】Young children are often advised not to spoil their appetite by eating sweets ________ the three meals. [ ]
A.
among
B.
during
C.
between
D.
through
【单选题】下面对课文的分析不正确的一项是( )
A.
第1段提出了全文的观点:人君必须“积其德义”、“居安思危,戒奢以俭” 。
B.
第1段用了两个比喻,先从正面喻证治国必积德,再从反面说明德不厚国不可长治久安。
C.
第2段以历代帝王为例说明打天下容易,守天下难的道理。
D.
第3段“十思”的核心内容是正己安人,但具体又有所侧重。
【简答题】把一批小球按2个红色、5个白色的顺序排列，第30个小球是______色，在排列的60个小球中，白色的小球占 (7) (10) ．
【简答题】Tea, coffee and cocoa are three major drinks all over the world. Tea is drunk by the largest number of people in the world. Tea, as well as silk and porcelain, began to be known by the world over a th...
【单选题】Three course tea means three cups of tea, the first tasted （ ）, the second tasted （ ）and the third is the taste of （ ）, which represents the gnosis of life.
A.
bitter sweet memory
B.
sweet bitter memory
C.
sweet memory bitter
D.
bitter memory sweet
【简答题】阅读理解。 Tea, coffee and cocoa are three major drinks all over the world. Tea is drunk by the largest number of people in the world. Tea, as well as silk and porcelain, began to be known by the world ove...
【简答题】A)The area covered by the course. B)The practice orientation of the course. C)Teachers’ attitude to both teaching and the student. D)Teachers’ flexibility in teaching.
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