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在社会保障基金运营中，可供选择的适合的投资方式有()。A、个人自主选择的投资方式B、直接存入金融机构C、基金管理机构直接从事商业证券投资和实业投资D、委托投资
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患者，女性，反复手掌处皮疹数年伴痒，每于夏季加重，冬季缓解，病程中不伴有甲损害及脓疱发生。查体：双手掌对称性角化、脱屑、肥厚，边界不清。预防此类疾病发生的主要措施是（）
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社会因素影响健康的基本规律是：泛影响性，恒常性，积累性和交互作用。泛影响性即作用的发散性，指一种社会因素可导致全身多个器官和系统发生下面哪种变化（）
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制定产品工艺过程的首要依据是（）。
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随着社会分工的细化和高度（），（）的发展，必然会逐渐从社会普通公众中分离出来一部分人。
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丙酮酸彻底氧化为CO2、H2O和能量，其P/O比值为：（）
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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. Some people dislike exercise because （）
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脉冲宽度表示脉冲的时间长度，同时也可换算为脉冲在光纤上所占的（）。
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要想熟练地在因特网上查找资料，应该学会使用（）。
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居民个人持多次往返签证的，可以向银行指导性限额购汇，但两次购汇时间的间隔不得少于（）。