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Sharks Perform a Service for Earth’s Waters It is hard to get people to think of sharks as anything but a deadly enemy. They are thought to (51) people frequently. Although these fish perform a valuable (52) for earth’s waters and for human beings, business and sport fishing are threatening their (53) . As a result, some sharks are at risk of disappearing from Earth. Warm weather may influence both fish and shark (54) . Many fish swim near coastal areas because of their (55) waters. Experts say sharks may follow the fish into the same areas, (56) people also swim. In fact, most sharks do not purposely charge at or bite humans. They are thought to mistake a person (57) a sea animal, such as a seal (海豹) or sea lion. That is why people should not swim in the ocean when the sun goes down or comes up, because those are the times when sharks are looking for (58) . Experts also say that bright colors and shiny jewelry (珠宝) may cause sharks to attack. A shark has an extremely ’good sense of (59) , with which it can find small amounts of substances in water, such as blood, body liquids and chemicals (60) by animals. These powerful senses help sharks find their food. Sharks eat fish, any (61) sharks, and plants that live in the ocean. Medical researchers want to learn more about the shark’s body defense and immune (免疫的) (62) against disease. Researchers know that sharks (63) quickly from injuries. They study the shark in hopes of finding a way to fight human disease. Sharks are important for the world’s oceans, as they eat injured and diseased fish. Their (64) activities mean that the numbers of other fish in ocean waters do not become too (65) . This protects the plants and other forms of life that exist in the oceans.

A. research
B. experiment
C. service
D. analysis

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场景(二)某建筑工程,南北朝向,桩基采用锤击法施工,基础底板长×宽×厚为40m×20m×1.1m,不设后浇带和变形缝,该建筑为钢筋混凝土框架结构,普通混凝土小型空心砌块填充墙作围护结构。底板混凝土标号为C35P8,配制底板混凝土采用P.O32.5水泥,浇筑时采用1台混凝土泵从东向西一次连续浇筑完成。根据场景(二),作答下列题目: 本工程主梁、次梁、板的钢筋位置顺序是()。

A. 主梁筋在上,次梁筋居中,板筋在下
B. 主梁筋居中,次梁筋在下,板筋在上
C. 主梁筋在下,次梁筋在上,板筋居中
D. 主梁筋在下,次梁筋居中,板筋在上

案例分析题某机电设备安装公司承担了理工大学建筑面积为2万平方米的图书馆工程的通风空调系统施工任务。该工程共有S1~S6六个集中式全空气空调系统,空调风系统设计工作压力为600Pa。空气处理机组均采用带送风机段的组合式空调机,由安装公司采购并组成项目部承担安装任务。风管系统安装完毕后,严密性试验采用漏光法检测合格。当施工进入空调系统调试阶段时,系统出现三个问题:①空气处理机组运转时晃动;②S1系统调试中在风管所有阀门全开情况下,实测送入空调区风量小于设计风量且相差较大,而该系统风机出口风量实测值符合设计要求;③空气处理机组冷却水进出管路上的阀门有滴水,经检查这两个阀门未保冷但无漏水。针对上述问题,施工单位采取了整改措施后才使系统调试合格。空调系统调试完成后,按施工质量验收程序进行了施工质量验收工作。问题 解决阀门滴水问题的措施有哪些?

65,甲公司在食品上注册“乡巴佬”商标后,与乙公司签订转让合同,获五万元转让费。合同履行后,乙公司起诉丙公司在食品上使用“乡巴佬”商标的侵权行为。法院作出侵权认定的判决书刚生效,“乡巴佬”注册商标就因有“不良影响”被依法撤销。下列哪些说法是错误的?()

A. “乡巴佬”商标权视为自始不存在
B. 甲公司应当向乙公司返还五万元
C. 撤销“乡巴佬”商标的裁定对侵权判决不具有追溯力
D. 丙公司可以将“乡巴佬”商标作为未注册商标继续使用

Sharks Perform a Service for Earth’s Waters It is hard to get people to think of sharks as anything but a deadly enemy. They are thought to (51) people frequently. Although these fish perform a valuable (52) for earth’s waters and for human beings, business and sport fishing are threatening their (53) . As a result, some sharks are at risk of disappearing from Earth. Warm weather may influence both fish and shark (54) . Many fish swim near coastal areas because of their (55) waters. Experts say sharks may follow the fish into the same areas, (56) people also swim. In fact, most sharks do not purposely charge at or bite humans. They are thought to mistake a person (57) a sea animal, such as a seal (海豹) or sea lion. That is why people should not swim in the ocean when the sun goes down or comes up, because those are the times when sharks are looking for (58) . Experts also say that bright colors and shiny jewelry (珠宝) may cause sharks to attack. A shark has an extremely ’good sense of (59) , with which it can find small amounts of substances in water, such as blood, body liquids and chemicals (60) by animals. These powerful senses help sharks find their food. Sharks eat fish, any (61) sharks, and plants that live in the ocean. Medical researchers want to learn more about the shark’s body defense and immune (免疫的) (62) against disease. Researchers know that sharks (63) quickly from injuries. They study the shark in hopes of finding a way to fight human disease. Sharks are important for the world’s oceans, as they eat injured and diseased fish. Their (64) activities mean that the numbers of other fish in ocean waters do not become too (65) . This protects the plants and other forms of life that exist in the oceans.

A. power
B. existence
C. mates
D. skills

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