劳动强度是以作业过程中人体的能耗、氧耗、心率、直肠温度、排汗率或相对代谢率等指标进行分级，体力劳动强度分为4个等级。下列劳动作业中，属于II级劳动强度的是(  )

某学者进行了一项肥胖与乳腺癌关系的研究 ，在200名乳腺癌患者中40名为肥胖者，在200名健康者中25名为肥胖者，结果具有统计学显著性 。
该研究可计算的指标为

Passage 1

Scientistshave found that although we are prone to snap overreactions, if we take amoment and think about how we are likely to react, we can reduce or eveneliminate the negative effects of our quick, hard-wired responses.

Snapdecisions can be important defense mechanisms; if we are judging whethersomeone is dangerous, our brains and bodies are hard-wired to react veryquickly, within milliseconds. But we need more time to assess other factors. Toaccurately tell whether someone is sociable, studies show, we need at least aminute, preferably five. It takes a while to judge complex aspects ofpersonality, like neuroticism or open-mindedness.

Butsnap decisions in reaction to rapid stimuli aren't exclusive to the interpersonalrealm. Psychologists at the University of Toronto found that viewing a fast-foodlogo for just a few milliseconds primes us to read 20 percent faster, eventhough reading has little to do with eating. We unconsciously associate fastfood with speed and impatience and carry those impulses into whatever elsewe're doing. Subjects exposed to fast-food flashes also tend to think a musicalpiece lasts too long.

  Yet we can reverse suchinfluences. If we know we will overreact to consumer products or housingoptions when we see a happy face  (onereason good sales representatives and real estate agents are always smiling),we can take a moment before buying. If we know female job screeners are morelikely to reject attractive female applicants, we can help screeners understandtheir biases-or hire outside screeners.

John  Gottman,the marriage expert, explains that we quickly "thin slice" information reliably only after we ground suchsnap reactions in  "thicksliced" long-term study. When Dr. Gottman really wants to assess whether a couple will stay together, he invitesthem to his island retreat for a much longer evaluation: two days, not twoseconds.

Our ability to mute our hard-wired reactionsby pausing is what differentiates us from animals dogs can think about thefuture only intermittently or for a few minutes. But historically we have spentabout 12 percent of our days contemplating the longer term. Although technologymight change the way we react, it hasn't changed our nature. We still have theimaginative capacity to rise above temptation and reverse the high-speed trend.

The time needed in making decisions may_______.

下面会引起天花板效应的是（　　）。

下列不属于明代四大声腔的是（  ）。

可引起心动过缓的降压药

自尊心、自信心、羞愧感反映了幼儿自我意识结构中哪一部分的内容（   ）。

胆固醇合成的主要场所是

一般成人摄氟量的多少由尿排出（  ）

患者，女，54岁，出现手指端针刺样疼痛、肿胀，首先应考虑

细菌性肺炎经抗生素治疗72小时后，症状仍无改善的可能原因不包括(    )