波音B-52亚音速远程战略轰炸机的绰号是“同温层堡垒”。

A、对

B、错

相关问题推荐

• 有关平流层特征及卫生学意义描述错误的是（　　）。

  A、同温层在臭氧层下面

  B、平流层又分两个亚层：同温层和臭氧层

  C、臭氧层能吸收短波紫外线，保护人体不受短波紫外线伤害

  D、平流层在对流层之上

  E、各种气象现象都是

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• 在平流层中发生气温随高度的增加而逐渐下降，这一现象出现在（　　）。

  A、平流层

  B、电离层

  C、对流层

  D、逸散层

  E、同温层

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• Fear of Dearth (缺乏)

  (1) I hate jogging. Every dawn, as I thud around New York City’s Central Park reservoir, I am reminded of how much I hate it. It’s so tedious. Some claim jogging is thought (conducive); others insist the scenery relieves the monotony. For me, the pace is wrong for contemplation of either ideas or vistas. While jogging, all I can think about is jogging—or nothing. One advantage of jogging around a reservoir is that there’s no dry shortcut home.

  (2) From the listless looks of some fellow trotters, I guess I am not alone in my unenthusiasm: Bill-paying, it seems, would be about as diverting. Nonetheless, we continue to jog; more, we continue to choose to jog. From a practically infinite array of opportunities, we select one that we don’t enjoy and can’t wait to have done with. Why?

  (3) For any trend, there are as many reasons as there are participants. This person runs to lower his blood pressure. That person runs to escape the telephone or a (cranky) spouse or a filthy household. Another person runs to avoid doing anything else, to dodge a decision about how to lead his life or a realization that his life is (leading nowhere). Each of us has his carrot and stick. In my case, the stick is my slackening physical condition, which keeps me from beating opponents at tennis whom I overwhelmed two years ago. My carrot is to win.

  (4) Beyond these completely different reasons, however, lies a deeper cause. It is no accident that now, in the last third of the twentieth century, personal fitness and health have suddenly become a popular obsession. True, modern man likes to feel good, but that hardly distinguishes him from his predecessors.

  (5) With amusingly ridiculous myopia (目光短浅), economists like to claim that the deeper cause of everything is economic. Delightfully, there seems no marketplace explanation for jogging. True, jogging is cheap, but then not jogging is cheaper. And the scant and simple equipment which jogging demands must make it a marketer’s least favored form of recreation.

  (6)Some scout-masterish philosophers argue that the appeal of jogging and other body-maintenance programs is the discipline they afford. We live in a world in which individuals have fewer and fewer obligations. The work week has shrunk. Weekend worship is less compulsory. Technology gives us more free time. Satisfactorily filling free time requires imagination and effort. Freedom is a wide and risky river; it can drown the person who does not know how to swim across it. The more obligations one takes on, the more time one occupies, the less threat freedom poses. Jogging can become an instant obligation. For a portion of his day, the jogger is not his own man; he is obedient to a regimen he has accepted.

  (7)Theologists may take the argument one step further. It is our modern irreligion, our lack of confidence in any hereafter, that makes us anxious to stretch our mortal stay as long as possible. We run, as the saying goes, for our lives, hounded by the suspicion that these are the only lives we are likely to enjoy.

  (8) All of these theorists seem to me more or less right. As the growth of cults and charismatic religions and the resurgence of enthusiasm for the military draft suggest, we do crave commitment. And who can doubt, watching so many middle-aged and older persons torturing themselves (in the name of fitness), that we are unreconciled to death, more so perhaps than any generation in modern memory?

  (9) But I have a hunch (预感) that there’s a further explanation of our (obsession with exercise). I suspect that what motivates us even more than a fear of death is a fear of dearth. Our era is the first to anticipate the eventual depletion of all natural resources. We see wilderness shrinking; rivers losing their capacity to sustain life; the air, even the stratosphere (同温层), being loaded with potentially deadly junk. We see the irreplaceable being squandered, and in the depths of our consciousness we are fearful that we are creating an uninhabitable world. We feel more

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• 气温在高空中是比较冷的，如果在某一高度有增温现象，导致该位置的温度比其下方的空气暖和时，称之（）

  A、高温层

  B、逆温层

  C、同温层

  D、培温层

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• 平流层中所不具有的是（）。

  A、空气只有水平方向的流动

  B、没有雨雪现象

  C、压强、密度随高度的增加而降低

  D、平流层内温度常年保持在-56.5℃，因此又被称为同温层.

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