关系数据库的规范化理论规定，在执行分离时，必须遵守 【10】 ，保持原有的依赖关系

简述产后大便难的病因病机。

Recent scientific studies have proven that ulcers are caused, at least in part, by the heliobacter bacterium. Dr. Redding has hypothesized that a natural way to prevent and cure ulcers is to eat large amounts of raw broccoli, which contains potent organic compounds that are beneficial to gastric health.（）

All of the following statements support Dr. Redding’s hypothesis, EXCEPT:A. It has been shown that people who consume raw broccoli on a regular basis have a 65 percent lower chance of developing ulcers than do the general population.

B. One of the organic compounds found in broccoli has been shown to have an antibiotic effect on the heliobacter bacterium.

C. Dr. Redding conducted a study in which groups of patients suffering from ulcers either ate large quantities of broccoli or ate a diet that included no vegetables; several of the patients who ate the large quantities of broccoli showed marked improvement in their conditions.

D. Broccoli is one of the most potent dietary sources of antioxidants, the organic compounds shown to combat the free radicals that are thought to cause cancer.

E. Test animals with chemically induced ulcers showed some signs of improvement when raw broccoli was incorporated into their diets.

空载停机，启动容易，并可防止发生重载停机容易出现的倒转，损坏设备、瘀埋机尾的现象。

钻孔时不准（）和手拿棉丝.

财务审计项目的一般审计目标包括（）。

A.总体合理性

B.真实做

C.合法性

D.完整性

E.公允性