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问题 单项选择题

发包人将全部施工任务发包给一个施工单位或由多个施工单位组成的施工联合体或施工合作体，这种承包方式称为（）。

A．平行承包

B．施工总承包

C．联合承包

D．横向承包

答案

参考答案：B

单项选择题

贴骨疽、脱疽、流注、痰核、鹤膝风等，患处漫肿无头，皮色不变，酸痛无热，口中不渴，舌淡苔白，脉沉细或迟细，宜首选（）。

A.阳和汤

B.理中丸

C.四逆散

D.当归四逆汤

E.小建中汤
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问答题

A 17-year U. S. study has finally answered one of the most pressing questions about diabetes: Can tight control of blood sugar prevent heart attacks and strokesThe answer, reported Thursday in The New England Journal of Medicine, is yes. Intense control can reduce the risk by nearly half. And, the study found, the effect occurred even though the patients had only had a relatively brief period of intense blood sugar control when they were young adults. None the less, more than a decade later, when they reached middle age, when heart disease and strokes normally start to appear, they were protected. The study involved those with Type 1 diabetes, which usually arises early in life and involves the death of insulin-secreting cells. The question of whether rigid blood sugar control protects against heart disease and strokes has divided the field for decades, diabetes researchers said. "It’s really a major question that has been around for a long time," said Dr. Judith Fradkin, who directs diabetes research at the National Institute of Diabetes and Digestive and Kidney Diseases, Researchers knew that diabetes was linked to heart disease — at least two-thirds of diabetics die of heart disease. But although studies showed that controlling blood sugar protects against damage to the eyes, kidneys and nerves, there was no conclusive evidence that it would have the same effect on heart disease and strokes. "In that sense, this is a landmark study," said Fradkin. But the result also gives rise to questions: Does the same effect occur in people with Type 2 diabetes, which usually occurs later in life and involves an inability to respond to insulin And why would tight control of blood sugar for one brief period have such a pronounced effect laterFradkin said she expected the results would hold for Type 2 diabetes. Another large U. S. federal study is addressing that question, she notes, but it is already known that tight control of blood sugar in Type 2 diabetes protects against nerve, kidney and eye damage, just as it does with Type 1 diabetes. In addition, a study in Britain hinted — although it did not demonstrate — that Type 2 diabetics who keep their blood sugar low have less heart disease and strokes. Fradkin said she hoped the emerging evidence and improving therapies would make a difference.
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