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问题 单项选择题

某商场的销售额和所需销售人员成正相关关系，X为销售额，Y为销售人员，据历史资料得到回归方程Y=19.93+0.03X。去年商场现有销售人员40人。若今年商场计划实现销售额1000万元，则商场需新招聘销售人员()人。

A.10

B.11

C.50

D.51

答案

参考答案：A

解析：本题考查一元回归分析法的计算。今年销售人员为y=19.93+0.03X=19.93+0.03×1000=49.93，约为50人。则商场需新招聘销售人员50-40=10(人)。

单项选择题

工程施工应遵守工程所在地对环境保护的管理规定。建设工程施工合同示范文本对办理施工环保许可的规定是（）。

A．承包人按规定办理有关手续，发包人承担由此发生的费用

B．承包人按规定办理有关手续，承包人承担由此发生的费用

C．发包人按规定办理有关手续，发包人承担由此发生的费用

D．发包人按规定办理有关手续，承包人承担由此发生的费用
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单项选择题

Throughout the 19th century and into the 20th, citizens of the United States maintained a bias against big cities. Most lived on farms and in small towns and believed cities to be centres of (1) , crime, poverty and moral (2) Their distrust was caused, (3) , by a national ideology that (4) farming the greatest occupation and rural living (5) to urban living. This attitude (6) even as the number of urban dwellers increased and cities became an essential (7) of the national landscape. Gradually, economic reality overcame ideology. Thousands (8) the precarious (不稳定的) life on the farm for more secure and better paying jobs in the city. But when these people (9) from the countryside, they carried their fears and suspicions with them. These new urbanities, already convinced that cities were (10) with great problems, eagerly (11) the progressive reforms that promised to bring order out of the (12) of the city.

One of many reforms came (13) the area of public utilities. Water and sewerage systems were usually operated by (14) governments, but the gas and electric networks were privately owned. Reformers feared that the privately owned utility companies would (15) exorbitant (过渡的) rates for these essential services and (16) them only to people who could afford them. Some city and state governments responded by (17) the utility companies, but a number of cities began to supply these services themselves. (18) of these reforms argued that public ownership and regulation would (19) widespread access to these utilities and guarantee a (20) price.

1（）

A.eruption

B.corruption

C.interruption

D.provocation
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