灌注桩后注浆技术中，关于注浆作业的顺序描述中正确的是（） A.对于非饱和土的复式注浆

面对新中国建立以来前所未有的严重经济困难，1961年春，党和政府全面调整国民经济，恢复发展生产。[ ]

一个人从饮食中摄入的胆固醇和脂肪越多，他的血清胆固醇指标就越高。存在着一个界限，在这个界限内，二者成正比。超过了这个界限，即使摄入的胆固醇和脂肪急剧增加，血清胆固醇指标也只会缓慢地有所提高。这个界限，各个人种是一样的。中国人大约是欧洲人均胆固醇和脂肪摄入量的l/4。上述判定最能支持以下哪项结论

A．中国人的人均胆固醇和脂肪摄入量是欧洲人的1/2，但中国人的人均血清胆固醇指标不一定等于欧洲人的l/2。

B．上述界限可以通过减少胆固醇和脂肪摄入量得到降低。

C．3／4的欧洲人的血清胆固醇含量超出正常指标。

D．如果把胆固醇和脂肪摄入量控制在上述界限内，就能确保血清胆固醇指标的正常。

证券公司从事证券经纪业务，客户资金不足而接受其买入委托，或者客户证券不足而接受其卖出委托的，对直接负责的主管人员和其他直接责任人员给予警告，撤销任职资格或者证券从业资格，并处以( )的罚款。

A．1倍以上5倍以下

B．3万元以上30万元以下

C．3万元以上10万元以下

D．1万元以上10万元以下

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 truth 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 spots, but no 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.

透析器复用必须遵照卫生部委托中华医学会制定的《血液透析器复用操作规范》进行操作。（）感染患者不得复用透析。

A、乙肝和丙肝病毒

B、乙肝和HIV

C、乙肝和丙肝病毒、HIV

D、乙肝和丙肝病毒、HIV和梅毒