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【单选题】
企业在采购时,( )是主要应用于生产企业,是生产企业根据生产计划和主产品的结构以及库存情况逐步推导出生产主产品所需要的零部件、原材料等的生产计划和采购计划的过程。A.
物料需求计划采购
B.
JIT采购
C.
供应链采购
D.
电子商务采购
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【单选题】This picture is ______ than that one.
A.
beautiful
B.
more beautiful
C.
most beautiful
D.
the most beautiful
【简答题】自动加速现象
【简答题】何谓自动加速现象?以下聚合体系中哪些会产生自动加速现象?为什么? 1．自由基本体聚合；2．阴离子沉淀聚合；3．自由基沉淀聚合
【简答题】阅读理解 Now, please look at this picture. This girl is my sister. Her name is Sally! She is l3 years old. She is in Class Two, Grade Seven. This boy is aunt's son. He is my cousin. His name is Jeff. He i...
【简答题】听下面的短文，回答1至5小题。 1. This is _____. A. a picture of Jim. B. a picture of Jim's room. C. a picture of Jim's family. 2. Where's the hat? It's _____. A. behind the door. B. under the desk. C. under the bed...
【简答题】听材料，回答问题。 1. What picture is the woman showing the man? A. A picture of the Great Wall. B. A picture of Beijing Zoo. C. A picture of the History Museum. 2. How many places did the woman visit besides ...
【简答题】自动加速现象产生的原因是什么?
【简答题】简要叙述自动加速现象及其产生的原因，并说明自动加速现象与引发剂、溶剂特性的关系
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