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当前学科：经济学
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简要说明国际收支的含义、编制国际收支平衡表的基本原则和国际收支平衡表中的项目分类。
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Questions 26 to 30 are based on the following passage. Exercise is one of the few factors with a positive role in long-term maintenance of body weight. Unfortunately, that message has not gotten through to the average American, who would rather try switching to “light” beer and low-calorie bread than increase physical exertion. The Centers for Disease Control, for example, found that fewer than one-fourth of overweight adults who were trying to shed pounds said they were combining exercise with their diet. In rejecting exercise, some people may be discouraged too much by caloric-expenditure charts: for example, one would have to briskly walk three miles just to work off the 275 calories in one delicious Danish pastry (小甜饼). Even exercise professionals concede half a point here. “Exercise by itself is a very tough way to lose weight,” says York Onnen, program director of the President’s Council on Physical Fitness and Sports. Still, exercise’s supporting role in weight reduction is vital. A study at the Boston University Medical Center of overweight police officers and other public employees confirmed that those who dieted without exercise regained almost all their old weight, while those who worked exercise into their daily routine maintained their new weight. If you have been sedentary (极少活动的) and decide to start walking one mile a day, the added exercise could burn an extra 100 calories daily. In a year’s time, assuming no increase in food intake, you could lose ten pounds. By increasing the distance of your walks gradually and making other dietary adjustments, you may lose even more weight. “Even exercise professionals concede half a point here” (Line 3, Para. 2) means “They （）”.
隔膜泵泄漏后的处理方法是（）。
采用奥氏体不锈钢焊条作填充材料，焊接珠光体钢和奥氏体不锈钢，过渡层为马氏体区，当马氏体区较宽时，会显著降低焊接接头的（）。
用溴酸钾法测定异烟肼含量时，1摩尔溴酸钾与几摩尔异烟肼相当()。A、1/3B、2C、3/2D、2/3
房屋有炕的民族有（）。
自动喷水系统系统做水压强度试验，当达到试验压力后应稳压();且压力降不应大于()。
工作总结
进、出铁路防护栅栏时，必须清点人员，并及时锁闭防护网门，防止人员遗漏及闲杂人员进入。
PING某台主机成功，路由器应出现（）提示
由于某公司所属工厂的工作性质，保证辐射安全极为重要。有项业务是测试辐射性物质在采购、配送与使用方面的系统控制。测试中有充分的证据表明，这个流程的记录情况良好，安全部门工作人员也很熟悉安全的运作流程。由于采购部门和设备部门也涉及这个流程，内部审计师正在考虑对这两个部门的放射性物质处理过程进行检查。内部审计师应该：（）