影响产业购买者决策的主要因素？

财政收支出现差额带来的成本和效益，最终仍要落到社会成员的身上，从而要求政府财政收支行为必须以（）为基础。

A.公平

B.诚信

C.公开

D.法制

物理学家用______来形象地描述空间磁场情况，在磁体外部它都是从磁体的______出来，回到磁体的______．磁悬浮列车是利用同名磁极相互______的原理来实现悬浮的．

应当逮捕的犯罪嫌疑人患有严重疾病的，或者是正在怀孕、哺乳自己( )的婴儿的妇女可以取保候审。

A．未满半周岁

B．未满二周

C．未满三周岁

D．未满一周岁

It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the things to be found are actually new, they are by definition unknown in advance. You cannot make choices in this matter. (46)You either have science or you don’t, and if you have it you are obliged to accept the surprising and disturbing pieces of information, along with the neat and promptly useful bits.

The only solid piece of scientific troth about which I feel totally confident is that we are profoundly ignorant about nature. Indeed, I regard this as the major discovery of the past hundred years of biology. It is, in its way, an illuminating piece of news. (47)It would have amazed the brightest minds of the 18th century Enlightenment to be told by any of us how little we know and how bewildering the way ahead seems. (48)It is this sudden confrontation with the depth and scope of ignorance that represents the most significant contribution of the 20th century science to the human intellect. In earlier times, we either pretended to understand how things worked or ignored the problem, or simply made up stories to fill the gaps. Now that we have begun exploring in earnest, we are getting glimpses of how huge the questions are, and how far from being answered. Because of this, we are depressed. (49)It is not so bad being ignorant if you are totally ignorant; the hard thing is knowing in some detail the reality of ignorance, the worst spots and here and there the not-so-bad sports, but not true light at the end of the tunnel nor even any tunnels that can yet be trusted.

But we are making a beginning and there ought to be some satisfaction. There are probably no questions we can think up that can’t be answered, sooner or later, including even the matter of consciousness. (50)To be sure, there may well be questions we can’t think up, ever, and therefore limits to the reach of human intellect, but that is another matter. Within our limits, we should be able to work our way through to all our answers if we keep at it long enough, and pay attention.

(48)It is this sudden confrontation with the depth and scope of ignorance that represents the most significant contribution of the 20th century science to the human intellect.

借款人的还款能力出现明显问题，完全依靠其正常经营收入无法足额偿还贷款本息，即使执行担保，也可能会造成一定损失是五级分类（）类贷款的核心定义.

A、正常

B、关注

C、次级

D、可疑