小儿腹泻最常见的病原是？

网民李某在网上发贴，谎称其居住地的两所学校发现甲型H1N1流感病例30多例，两所学校的学生都停课了。警方查实这一虚假信息后，依法对李某行政拘留10天。这给我们的启示是 

A．行使政治自由权利是公民参与管理社会的标志

B．政治自由是人民行使当家作主权利的重要方式

C．公民要依法行使宪法赋予的政治自由权利

D．维护国家安全、荣誉和利益是公民根本的行为准则

Branding through Differentiation

It’s not enough for your company to merely offer a great product or service. To get
ahead of the field, today’s competitive marketplace demands that the business owners
34 establish and develop a distinct brand. It’s important that your brand help them create
35 and further a clear identity, if one that every employee, from the CEO down to the
36 sales team, can understand and get behind with. The brand must be your mantra, and it
37 needs to be the one that can be stated succinctly. The real key to increased
38 market share is differentiation. How you approach the differentiation depends on your
39 particular product or business. The critical starting point is for understanding whether
40 your business or your product is the brand. For instance, although Procter & Gamble
41 sells countless other products, but consumers far more readily recognize P&G’s
42 individual product lines. Mr. Clean, Tide, Crest, Folgers, and Charmin, for example.
43 That’s intentional branding that favors the product, not only the company. However, for
44 most of small businesses, the business itself will be the brand. How you proceed depends
45 on whether your company or product varies greatly from your competitors or whether
you’re one of several companies offering similar goods or services.

下列哪项不支持房间隔缺损的诊断（）

A.胸骨左缘2～3肋间有杂音

B.肺动脉瓣区第二音减弱

C.肺动脉段隆起，有肺门"舞蹈"

D.X线示右房、右室大

E.心电图示电轴右偏，右房、右室大

计算砌块墙外墙高度时，正确的方法是______。

A．屋面无天棚者，外墙高度算至屋架下弦底另加200mm
B．平屋面外墙高度算至钢筋混凝土板底
C．平屋面外墙高度算至钢筋混凝土板顶
D．女儿墙从屋面板上表面算至压顶上表面

引起Ⅱ型呼吸衰竭最重要的机制是（）

A.弥散功能障碍

B.通气量下降

C.氧耗量增加

D.通气／血流比例失衡

E.分流