城乡规划管理控制的目的是保证其管理目标的实现，控制要做到有效；有效控制要符合的要求不

一患者左下第一磨牙大面积银汞合金充填，近中食物嵌塞，要求修复

患者食物嵌塞的可能原因不包括（）

A．与邻牙接触不良

B．平面与邻牙不一致

C．龈 * * 萎缩

D．银汞充填体边缘微漏

E．银汞充填物有悬突

如下图所示焊接连接采用三面围焊，焊脚尺寸h_f=6mm，钢材为Q235A，，试计算此连接所能承受的最大静拉力N。

E­reading and e­books are slowly conquering the world.Compared to traditional paper books，e­books in some schools and universities attract more interest because the information flow seems much easier to manage and comes in a greatly higher quantity.

Japan is known for the reform­minded attitude towards the gadget(精巧装置) world and for the fact that it is one of the first countries that encouraged in the educational system the emailing of homework.

The digital textbook looks like the logical step in the world of learning.It is natural but it is also completely untraditional.

The plan of the largest publishing companies to get in line with the trend is to save a large quantity of paper and make the kids become interested in learning using a cool gadget.Many USA universities and colleges have made students be used to the procedure of downloading the courses and of course the procedure involves interactive software and also the chance of using the computer.

The traditional education system is still unwilling when it comes to giving up books.The standard approach of information taught out of a book and Shakespeare read out of an old school novel makes studying English as traditional as it can be.

In a world where kids would rather see the movie than read a book，the digital age has brought along a completely different flavor to reading.Bringing that flavor in school will make teaching a greener and also a completely different matter.

小题1:Why are e­books so popular in the world?

A．It's cheap to buy.

B．It's effective to use.

C．It's convenient to bring.

D．It's the latest fashion.小题2:Which of the following words can best take the place of the word “reform­minded” in the second paragraph?

A．Old­fashioned.

B．Aggressive.

C．Rejecting.

D．Progressive.小题3:In America，the students are encouraged to________．

A．apply the procedure of downloading the courses

B．communicate with their teachers using computer

C．research some interactive software for their studies

D．do their homework in computer instead of in paper小题4:What's the author's attitude to the digital textbooks?

A．Being against.

B．Being for.

C．Not mentioned.

D．Being neutral.

甲企业位于B地区，主要生产A产品。某咨询公司接受甲企业的委托，完成了下列咨询服务工作：
(1)A产品成熟度分析：A产品的技术趋于稳定，市场需求迅速增加，生产规模逐步提高，生产该产品的企业数量也在迅速增加，生产成本呈下降趋势。
(2)A产品销售量预测：咨询工程师收集了2005～2009年A产品在B地区的平均销售价格和销售量，见表13，采用移动平均法预测了2010～2019年A产品在B地区的销售量，见表14。

表13 2005—2009年A产品在B地区的平均销售价格和销售量
年 份	平均销售价格/(元/台)	销售量/万台	价格弹性系数
2005	8100	80	—
2006	7800	85	-1.69
2007	7600	89	-1.84
2008	7300	95	-1.71
2009	7100	100	-1.92

表14 2010～2019年A产品在B地区预测销售量
年 份	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
A产品预测销售量/万台 (n=3)	95	97	97	96	97	97	96	97	97	96

(3)甲企业的内部和外部因素评价：运用评价矩阵对甲企业的内部因素和外部因素进行了综合评价，评价矩阵见表15。

表15 甲企业的企业内部和外部因素评价
	关键内部因素	权重	得分		关键外部因素	权重	得分
优势	研发能力强	0.20	4	机会	政策扶持	0.20	4
	管理规范	0.25	4		信贷环境宽松	0.15	3
	产品性能处于行业中等水平	0.15	3		行业技术进步	0.15	2
劣势	流动资金紧张	0.10	-3	威胁	新的替代产品出现	0.25	-2
	生产设备较落后	0.10	-2		竞争对手结盟	0.25	-1
	销售渠道不畅通	O.20	-3

问题

咨询工程师选择移动平均法预测A产品的销售量是否恰当说明理由。

离心泵中的核心运转部件是（）。

A.壳

B.座

C.轴

D.叶轮