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某桥主墩基础为钻孔灌注桩，地质依次为表层2m的砾石，以下为软土。施工单位考虑到灌注时间较长，经业主同意在混凝土中加入缓凝剂。首批混凝土灌注后埋置导管的深度为1.2m，在随后的灌注过程中连续均匀进行。当灌注混凝土进行到23m时，发现导管埋管，施工人员采取了强制提升的方法；灌注到30m时，出现导管堵塞，施工人员采用型钢插入法疏通导管，之后继续灌注混凝土直到完成。施工后经检测发现断桩。 根据场景，回答下列问题。 下列措施不是钻孔灌注桩断桩的防治措施是( )。
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A great deal of attention is being paid today to the so-called digital divide—the division of the world into the info (information) rich and the info poor. And that (31) does exist today. My wife and I lectured about this looming danger twenty years ago. What was less (32) then, however, were the new, positive (33) that work against the digital divide. (34) , there are reasons to be (35) .There are technological reasons to hope the digital divide will narrow. As the Internet becomes more and more (36) , it is in the interest of business to universalize access-after all, the more people online, the more potential (37) there are. More and more (38) , afraid their countries will be left (39) , want to spread Internet access. Within the next decade or two, one to two billion people on the planet will be (40) together. As a result, I now believe the digital divide will (41) rather than widen in the years ahead. And that is very good news because the Internet may well be the most powerful tool for (42) world poverty that we’ve ever had.Of course, the use of the Internet isn’t the only way to (43) poverty. And the Internet is not the only tool we have. But it has (44) potential.To (45) advantage of this tool, some poor countries will have to get over their outdated anti-colonial prejudices (46) respect to foreign investment. Countries that still think foreign investment is a/an (47) of their sovereignty might well study the history of (48) (the basic structural foundations of a society) in the United States. When the United States built its industrial infrastructure, it didn’t have the capital to do so. And that is (49) America’s Second Wave infrastructure— (50) roads, harbors, highways, ports and so on-were built with foreign investment. 45().
某三级公路第四合同段，设计车速40km/h，路基宽度8.5m，路面为双车道沥青混凝土路面。路线通过地段为砂性土，砂性土覆盖厚度一般在1～5m不等，砂性土层下为粉质性低液限黏土，地下水位在埋深3m以下，路线两侧为农业区。 K20+450～K20+950路堤填筑高度22m，为防治路基病害，在采取相应的设计处理措施基础上，设计方对施工提出以下要求：(1)加强对地基的压实。(2)严格分层填筑并充分压实。(3)填挖交界处挖台阶。 施工单位在施工过程中严格按照设计要求进行施工，路基填筑过程中严格控制有效宽度，加强沉降观测和侧向位移观测，在施工过程中遇到一处软基，在对软基进行必要处理后，从原地面以上2m高度范围内填筑细粒土并分层压实。由于填筑过程中突遇大雨停工数日，天晴后排除积水继续施工，为赶工期，工班长提出加班加点填筑，并提前完工。 根据此案例场景，回答下列问题： 设计方提出的施工要求，主要是要预防( )。
A great deal of attention is being paid today to the so-called digital divide—the division of the world into the info (information) rich and the info poor. And that (31) does exist today. My wife and I lectured about this looming danger twenty years ago. What was less (32) then, however, were the new, positive (33) that work against the digital divide. (34) , there are reasons to be (35) .There are technological reasons to hope the digital divide will narrow. As the Internet becomes more and more (36) , it is in the interest of business to universalize access-after all, the more people online, the more potential (37) there are. More and more (38) , afraid their countries will be left (39) , want to spread Internet access. Within the next decade or two, one to two billion people on the planet will be (40) together. As a result, I now believe the digital divide will (41) rather than widen in the years ahead. And that is very good news because the Internet may well be the most powerful tool for (42) world poverty that we’ve ever had.Of course, the use of the Internet isn’t the only way to (43) poverty. And the Internet is not the only tool we have. But it has (44) potential.To (45) advantage of this tool, some poor countries will have to get over their outdated anti-colonial prejudices (46) respect to foreign investment. Countries that still think foreign investment is a/an (47) of their sovereignty might well study the history of (48) (the basic structural foundations of a society) in the United States. When the United States built its industrial infrastructure, it didn’t have the capital to do so. And that is (49) America’s Second Wave infrastructure— (50) roads, harbors, highways, ports and so on-were built with foreign investment. 47().
Scattered through the seas of the world are billions of tons of small plants and animals called plankton. Most of these plants and animals are too small for the human eye to see. They drift about lazily with the currents, providing a basic food for many larger animals. Plankton has been described as the equivalent of the grasses that grow on the dry land continents, and the comparison is an appropriate one. In potential food value however, plankton far outweighs that of the land grasses. One scientist has estimated that while grasses of the world produce about 49 billion tons of valuable carbohydrates each year. The sea’s plankton generates more than twice as much.Despite its enormous food potential, little effort was made until recently to farm plankton as we farm grasses on land. Now marine scientists have at last begun to study this possibility, especially as the sea’s resources loom even more important as a means of feeding an expanding world population.No one yet has seriously suggested that "planktonburgers" may soon become popular around the world. As a possible farmed supplementary food source, however, plankton is gaining considerable interest among marine scientists.One type of plankton that seems to have great harvest possibilities is a tiny shrimp like creature called krill. Growing to two or three inches long, krill provide the major food for the giant blue whale, the largest animal ever to inhabit the Earth. Realizing that this whale may grow 100 feet and weigh 150 tons at maturity, it is not surprising that each one devours more than one ton of krill daily.Krill swim about just below the surface in huge schools sometimes miles wide, mainly in the cold Antarctic. Because of their pink color, they often appear as a solid reddish mass when viewed from a ship or from the air. Krill are very high in food value. A pound of these crustaceans contains about 460 calories—about the same as shrimp or lobster, to which they are related.If the krill can feed such huge creatures as whales, many scientists reason, they must certainly be contenders as new food source for humans. The author mentions all of the following as reasons why plankton could be considered a human food source except that it is ().
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