在某工厂研究饮酒与糖尿病关系的队列研究中,发现饮酒者糖尿病的发病率是12.0%,不饮酒者糖尿病的发病率为3.0%,该工厂工人的糖尿病的发病率是5.0%。根据此资料:
人群归因危险度百分比为
女性50岁,慢性咳嗽、偶咯大量脓痰20年,有时咯大口鲜血。体检:双肺底可闻及局限性粗湿啰音,经治疗后可好转。多次胸片提示左下肺纹理增粗紊乱。本例的主要治疗措施是()。
冷瘴的特点是( )
寒甚热微,或但寒不热,或呕吐腹泻,甚则嗜睡不语,神志昏蒙
发作时热多寒少,汗出不畅,头痛,骨节酸痛
每日或间一两日发作一次,寒热休作有时
发作时热少寒多,口不渴,胸闷脘痞,神疲体倦
每遇劳则易发作,发时寒热较轻,面色萎黄,倦怠乏力
A市某机械加工企业陈某连续从事焊接作业工作4年,8个月前被调至管理部门。现重新回到原岗位从事焊接工作。张某是刚从B市调来的低压电工。持有有效的特种作业操作证。关于两人特种作业操作证职证及复审的说法,正确的是( )。
She breathed a sigh of _____ when she found out she had passed the exams.
Passage 1 Results showed that at least a tenth of the Harvard first-year undergraduates polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework. An anonymous survey by Harvard's newspaper has revealed a surprising pattern of academic dishonesty among studertts entering the US universities. The survey by The Harvard Crimson was emailed to the incoming first year undergraduates; 1,600 students responded. Results showed that at least a tenth of the students polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework. Athletes were apparently the most prone to cheating. 20 percent of students who played a university sport admitted to cheating on an exam compared to 9 percent of students who did not. The survey also revealed that men were not only more likely to cheat but were also more likely to admit to it. The results, compared to a previous survey done on the class of 2013, suggested that cheating may be becoming more commonplace. Of the outgoing seniors only 7 percent admitted to cheating in an exam and another 7 percent said they had been dishonest on a take-home test. 32 percent of the seniors said they had cheated on homework during their undergraduate years. The surveys come in the wake of a cheating scandal at the university which saw 120 students investigated for sharing answers on an exam in 2012. One recent graduate stated: "Cheating was commonplace when I was at Harvard, especially with students in their first year or two. I would say as many as 60 per cent of students took notes into some exams. No one really cared the faculty, well some of them at least, seemed to recognize and yet ignore the problem." In an email to NBC News, Jeff Neal, a Harvard representative, explained that a committee, made up of faculty, staff and students had been established to tackle cheating, which "is a national problem in American education". He added: "While the vast majority of Harvard and other students do their work honestly, beginning this year Harvard College has implemented a new, more robust strategy of communicating with all students, particularly first-year students, about the importance-and the ways to achieve- academic integrity." In a rebuff to critics who say university has become little more than an expensive party, 84 per cent of the responding undergraduates fully expected to prioritize their academics over extracurricular activities, sport, employment and their social lives. Not a single student put academics at the bottom of their list. Not content with confining themselves to their degree subject, 59 percent of incoming students expressed a desire to pursue a secondary field of study, and 36 percent hoped to learn a language.
What can we learn from the last paragraph?
母鼠对它所生的鼠崽立即显示出明显的母性行为。而一只刚生产后的从未接触过鼠崽的母鼠,在一个封闭的地方开始接触一只非己所生的鼠崽,七天后,这只母鼠才显示出明显的母性行为。如果破坏这只母鼠的嗅觉,或者摘除鼠崽产生气味的腺体,上述这七天的时间段将大大缩短。
上述断定最能推出以下哪项结论?()