检查减速机稀油站，需检查高压油泵的压力和（）。A.油箱油位、油压 B.油箱油位、油温

新鲜叶类蔬菜常残留有水溶性有机农药．人们一般认为：把蔬菜浸入清水中一段时间，即可大大减少蔬菜的农药残留量．对此，某研究机构做了以下实验．

实验一：取同一新鲜蔬菜样本各1000克，用不同方法处理，结果如下：

处理方法	未作处理	仅用纯净水冲洗1分钟后	浸入纯净水30分钟后
农药残留量	0.196毫克	0.083毫克	0.123毫克

实验二：取同一新鲜蔬菜若干浸入-定量纯水中，每隔-段时间，取出-小片菜叶，测定其细胞液浓度，所得数据可绘出如图所示的曲线．

据上述实验结果分析回答：

（1）对实验一结果的解释是：用纯净水冲洗1分钟后，蔬菜农药残留量比未作处理减少一半以上，这是因为______；而浸入纯水30分钟后，蔬菜残留农药量反倒比仅用纯水冲洗1分钟的蔬菜农药残留量多，这说明______．

（2）从对实验二曲线的分析中可知：从A→B点，植物细胞液浓度变化的原因是______，而从B→C点，细胞液浓度变化的原因是______．综合上述分析，可以说明：植物细胞吸收水分和可溶性有机农药的关系是两个相对独立的过程．

（3）农业上常采用根外追肥（即向植物叶片喷洒有机肥料和微量元素）的方法．补充植物所需的养分．根据有关原理，根外追肥选择在什么样的环境条件下进行效果最好？为什么？______．

阅读理解

     British scientists may have discovered the reason why red wine appears to protect the heart. They

say natural chemicals found in red wine appear to protect against blocked blood vessels(血管). The

chemical substances are called poly-phenols(多酚). They come from the outer covering of grapes. They

are not present in other alcoholic drinks.

     Researchers say their discovery explains why many people in southern Europe can eat fatty foods and

still have a low risk of heart disease. People in France, for example, have lower rates of heart disease

than Americans do. Yet the traditional French diet includes butter, cheese and other foods high in

cholesterol(胆固醇). This led the British scientists to examine another important part of the French

diet - red wine. Several earlier studies have suggested that people who drink proper amounts of alcohol

may reduce their risk of heart disease.

     The British team experimented with cells from the blood vessels of cows. The scientists studied the

effects of twenty-three kinds of red wine on the cow cells. They found that poly-phenols from all of the

red wines stopped production of a protein called endothelin(内皮素). This protein causes blood vessels

to become smaller. Scientists believe endothelin is linked to hardening of the blood vessels, which is a

cause of heart disease.

    The scientists found that the decrease in endothelin levels was linked to the amount of poly-phenols in

the wines. The British team performed similar experiments with two other kinds of wine, white and rose.

These wines contain little or no poly-phenols because the grape skins are removed before the wine is

made. White and rose wines had no effect on endothelin levels.

     The scientists also studied the effect of non-alcoholic juice made from red grapes. They found that

grape juice slowed the production of endothelin, but was much less effective than the red wines.

1. So far as grapes are concerned,           is more effective on reducing the risk of heart disease.

A. the outer part of grapes

B. the inner part of grapes

C. the seeds of grapes

D. the juice in grapes

2. What made the British scientists study another important part of the French diet?

A. Traditional French diet.

B. Lower risk of heart disease of the French.

C. The reason why people drink wine.

D. Poly-phenols not existing in other things.

3. From this passage, we may know people's health is linked to           .

A. diet habits  

B. their genes

C. their education

D. living surroundings

4. What's the best title for this passage?

A. A Healthy Diet

B. Protecting Your Heart

C. Red Wine and Health

D. A Study on Health

往复泵有自吸作用，安装高度没有限制。

符合ALL特点的是（）

A.过氧化物酶阳性

B.可见.Auer小体

C.非特异酯酶阳性

D.苏丹黑染色阴性

E.糖原PAS反应（+）或成块

人体血糖浓度的相对稳定受多种因素影响。现有甲、乙、丙三人，甲正常；乙的胰岛B细胞受损；丙的胰岛B细胞功能正常、体内含有抗胰岛素受体的抗体。

请回答下列问题：

假如你是医生，根据已知信息，对三人的情况你所作出的诊断是（），为进一步验证你的推断，可以（）