关于右房室口解剖和功能的描述，错误的是（）。 A.右房室口呈卵圆形 B.房室环上有3

地质条件包括的内容有（）。

A.地基承载力

B.地下水

C.地形

D.地震

E.气候

某研究性学习小组利用如图所示实验装置进行了以下探究实验．步骤如下：①检查装置气密性，加入锌粒和稀硫酸；②关闭K₂、打开K₁，待气泡连续均匀产生，立即关闭K₁、打开K₂，并开始计时；③待丁中收集到10mL水，结束计时；④换不同溶质质量分数、不同体积的稀硫酸，与质量相同的同一种锌粒重复上述实验；⑤将每次实验的数据记录于下表：

 

（1）写出乙中反应的化学方程式：___________；

（2）该实验的目的是：______________

（3）上述实验证明：______________________对该反应中氢气产生的速率有显著影响；

（4）若要快速制取大量氢气，可在乙中加入几滴硫酸铜溶液，但加入的量不可过多，原因是： _____________（用化学方程式表示）．

6时整，时针和分针成平角。[ ]

In a normal recession, the to-do list is clear. Copies of Keynes are dusted off, the banks lower interest rates, the president and Congress cut taxes and hike spending. In time, purchasing, production and loans perk up, and Keynes is placed back on the shelf. No larger alterations to the economy are made, because our economy, but for the occasional bump in the road, is fundamentally sound. This has been the drill in every recession since World War Ⅱ. Republicans and Democrats argue over whose taxes should be cut the most and which projects should be funded, but under public pressure to do something, they usually find some mutually acceptable midpoint and enact a stimulus package. This time, though, don’t expect that to be the end of the story — because the coming recession will not be normal, and our economy is not fundamentally sound. This time around, the nation will have to craft new versions of some of the reforms that Franklin Roosevelt created to steer the nation out of the Great Depression.

肾病综合征并发血栓的原因不包括（）

A.血液浓缩及高脂血症造成血液黏度增加

B.凝血，抗凝和纤溶系统失衡

C.血小板功能亢进

D.与蛋白质营养不良有关

E.应用利尿剂和糖皮质激素加重高凝状态