题目内容

关于重心法求解配送中心的描述正确的是:

A. 重心法求解配送中心位置为最优位置,无需调整
B. 重心法求解只需迭代2次就可以了
C. 迭代过程中的比较因素可以认为的设定
D. 迭代必须不断重复,直至求出最优解

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英译汉:“Melting Point”,正确的翻译为( )。

A. 冰点
B. 凝点
C. 湿度
D. 熔点

《出口玩具质量许可证》有效期为( )。出口玩具发货人于装运前( )报检,必须逐批实施检验。

A. 5年;7天
B. 5年;15天
C. 10年;7天
D. 10年;15天

There (1) not one type of reading but several according to your reasons for reading. To read efficiently, you have to (2) your reading speed and technique (3) your aim (4) reading. Skimming is a technique necessary for quick and efficient reading.When skimming, you (5) the reading (6) quickly in order to get the (7) of it, to know how it is organized, (8) an idea of the tone or the intention of the writer. Skimming is (9) an activity which (10) an overall view of the text and (11) a definite reading competence.Skimming doesn’ t need reading all the material, but it doesn’ t mean that it is an (12) skill for the lazy, because it need a high degree of alertness and concentration.When you read, you usually start with (13) understanding and move towards detailed understanding rather than working the other way round. But (14) is also used after you have already carefully studied and you need to (15) the major ideas and concepts.In order to be able to skim quickly and (16) through a text, you should know where to to6k for what you want. In preview skimming you read the introductory information, the headings and subheadings, and the summary, if one is provided. (17) this skimming, decide whether to read the material more thoroughly, and select the appropriate speed (18) to read.The same procedure (19) for preview skimming could also be used to get an overview. Another method would be to read only key words. This is done by omitting the unnecessary words, phrases, and sentences.In order to skim efficiently and fulfill your purpose, (20) practice is necessary. 8()

A. substance
B. resource
C. source
D. material

法定检验的进口商品,应当在通关后( )内,向检验检疫机构申请检验。

A. 10日
B. 15日
C. 20日
D. 30日

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