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四、计算题（本大题共 20 分）某项工程需要 A 种地方材料，经过调查研究有甲、乙两个供货地点，甲地出厂价格为 23 元／t ，可供需要量的 65％；乙地出厂价格为 30.38 元／t，可供需要量的 35％。运输方式采用汽车运输，甲地离工地 63 公里，乙地离工地 79 公里，材料不需要包装，途中损耗 5％，试计算该材料预算价格。假设有关地区汽车货物运输费为 0. 19 元／t•km，装卸费 1.80 元／t，调车费 0.84 元／t,并且已知材料采购保管费率为 2.5% 。地方材料由地方直

一、单项选择题（本大题共 15 小题，每小题 2 分，共 30 分） 1 ．信息世界中的术语“实体”对应于机器世界的术语是（）A ．记录B ．字段 C ．文件 D ．关键码

Mike isan honest workerwe all believe himA. so...thatB. such...thatC.as......as

Mary works harder than her sisterA. doB. doesc. did

What she does is a full-time iob, not anA.innovationB.internshipC.improvement

Prices change according toand demandA. supplyBrequirementssupervisionC

There areflowers in the gardenA. little two yellowB. yellow two littlec. two little yellow

in the late 1970sAmerican manufacturingfactories realized the importance of quality control.A. It was...whenB. It is...whenc. It was...that

An application form will be sent to youA. on requestB. on a requestc. in request

We should discourage peopleusing their cars in the citycenters.A. fromBwithc. by

The bookMike.s. It has his name on itA. have beB. must bec. have to be

of Professor Smith.s have arrived hereA. Two studentB. Two studentsc. Two-students

.I was trying to get into thebus when I heard a voice frombehindA.crowdB.crowdingC.crowded

He used tovery hard when he was youngAworkingBworkc. to work

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