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（ ）是对一类产品中的一组产品同时进行标准化的一种形式，是标准化的高级形式，它按照用途和结构将同类型产品归并在一起，使产品品种典型化，又把同类型的产品的主要参数、尺寸，按优先数理论合理分级，以协调同类产品和配套产品以及包装之间的关系。
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举一反三
【单选题】Peter is funny and he always makes his friends _______.
A.
to laugh
B.
laughed
C.
laughing
D.
laugh
【简答题】书面表达。 Dear Peter, Thanks for your last letter. I am happy to know you' had a very great funny vacation. As your best pen pal, I'd like to tell you how I spent my vacation. I didn't go to school on May...
【单选题】Peter Sellers wouldnt be allowed his career today. All those funny radial stereotypes—the caricatured frogs, wops, yids and goodness-gracious-me Pakis—are in clear breach of the codes of political cor...
A.
he was a genius
B.
he was as big as The Beatles
C.
his life was full of drama and contradiction
D.
he led a very austere life
【简答题】What’s so funny about Peter’s cry: “What the hell was that?” Surprised by the loud boom, he ________________.
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