某超市的某种食用油平均日需求量为 100 瓶,标准差为 5瓶/天,平均提前期为 2 天,标准差为 1 天,且需求量、提前期均服从正态分布,如果客户服务水平不低于 95%,客户服务水平与安全系统对应关系见下表,则该商品的安全库存量为多少? 该超市为了降低库存成本,采用订购点法控制库存。此类货物的订购成本为每次 35 元,每月每单位货物的持有成本为 21 元,订购备运时间为 3 天,计算此公司的订购点和订购批量各为多少?(每月按 30 天计)
根据下列材料请回答下列题:
问题:
1.施工承包单位采用的施工方案有何不妥?请指出并改正。
2.针对砌筑工程在选择施工方案时的主要内容包括哪些?
3.扣件式钢管脚手架的作业层上非主节点处的横向水平杆宜根据什么来设置间距?
月公司采用劈裂注浆法是否正确?如不正确,应采取什么方法?哪些浆液可供选用?
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SECTION A MINI-LECTURE
In this section you will hear a mini-lecture. You will hear the lecture ONCE ONLY. While listening, take notes on the important points. Your notes will not be marked, but you will need them to complete a gap-filling task after the mini-lecture. When the lecrure is over. you will be given two minutes to check your notes, and another ten minutes to complete the gap-filling task on ANSWER SHEET ONE. Use the blank sheet for note- taking.
SECTION A MINI-LECTURE [10 MIN]
Complete the gap-filling task. Some of the gaps below may require a maximum of THREE words. Make sure the word(s) you fit-l in is (are) both grammatically & semantically acceptable. You may refer to your notes.