更多“压力容器的设计单位应当具备下列条件：（）。”相关的问题
Increasingly, historians are blaming diseases imported from the Old World for the great disparity between the native population of America in 1492--new estimates of which jump as high as 100 million, or approximately one-sixth of the human race at that time--and the few million full-blooded Native Americans alive at the end of the nineteenth century. There is no doubt that chronic disease was an important factor in the sharp decline, and it is highly probable that the greatest killer was epidemic disease, especially as manifested in virgin-soil epidemics. Virgin-soil epidemics are those in which the populations at risk have had no previous contact with the diseases that strike them and are therefore immunologically almost defenseless. That virgin-soil epidemics were important in American history is strongly indicated by evidence that a number of dangerous maladies--smallpox, measles, malaria, yellow fever, and undoubtedly several more--were unknown in the pre-Columbian New World. The effects of their sudden introduction are demonstrated in the early chronicles of America, which contain reports of horrible epidemics and steep population declines, confirmed in many cases by quantitative analyzes of Spanish tribute records and other sources. The evidence provided by the documents of British and French colonies is not as definitive because the conquerors of those areas did not establish permanent settlements and began to keep continuous records until the seventeenth century, by which time the worst epidemics had probably already taken place. Furthermore, the British tended to drive the native populations away, rather than to enslave them as the Spaniards did; so that the epidemics of British America occurred beyond the range of colonists’ direct observation. Even so, the surviving records of North America do contain references to deadly epidemics among the native population. In 1616--1619 an epidemic, possibly of pneumonic plague, swept coastal New England, killing as many as nine out of ten. During the 1630’s smallpox, the disease most fatal to the Native American people, eliminated half the population of the Huron and Iroquois confederations. In the 1820’s fever ruined the people of the Columbia River area, killing eight out of ten of them. Unfortunately, the documentation of these and other epidemics is slight and frequently unreliable, and it is necessary to supplement what little we de know with evidence from recent epidemics among Native Americans. For example, in 1952 an outbreak of measles among the Native American inhabitants of Ungava Bay, Quebec, affected 99 percent of the population and killed 7 percent, even though some had the benefit of modern medicine. Cases such as this demonstrate that even diseases that are not normally fatal can have destroying consequences when they strike an immunologically defenseless community.Notes: disparity 差距。 virgin-soil处女地。 malady 疾病 chronicle 编年史。 tribute 贡品。 pneumonic plague肺鼠疫。confederation 同盟。 smallpox 天花。measles 麻疹。
A．recur more frequently than chronic diseases.B．involve populations with no prior exposure to a disease.C．usually involve a number of interacting diseases.D．are less responsive to medical treatment than are other diseases.
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通过实际进度与计划进度的比较确定进度偏差后,还可以根据工作的预测该进度偏差对后续工作及项目总工期的影响（）
A.总时差
B.质量和安全
C.自由时差
D.直接成本
E.直接费用率
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X线体层摄影目前已基本被以下哪项检查所取代（）
A.CR B.DR C.USG D.MRI E.CT
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从工作的内容来说，商业银行的个人理财业务与商业银行的储蓄业务、信托业务是相同的。
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下列关于尿路感染治疗的叙述,不正确的是()
A.轻型急性肾盂肾炎一般口服有效抗菌药物14天
B.无症状性细菌尿必须治疗
C.重新感染所致的再发性尿路感染,应采用长程低剂量抑菌疗法
D.复发性尿路感染应积极寻找并去除易感因素
E.妊娠妇女应选用肾毒性较小的抗菌药物
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10807单元解析气供10805单元加热炉所用。
A . 正确
B . 错误
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特发性肺间质纤维化（）
A. 杵状指（趾）B. B.局限性的喘鸣音C. C.X线胸片上双侧肺门淋巴结对称性肿大D. D.双下肺固定部位的湿啰音E. E.呼气相延长的弥漫性哮鸣音
A. 杵状指（趾）
B. B.局限性的喘鸣音
C. C.X线胸片上双侧肺门淋巴结对称性肿大
D. D.双下肺固定部位的湿啰音
E. E.呼气相延长的弥漫性哮鸣音
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通过悬移质测验作业，推算出断面输沙率和（或）断面平均含沙量及断面泥沙（）。
A . A、特殊颗粒
B . B、颗粒粗细
C . C、细颗粒
D . D、颗粒级配
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置换式住房贷款的贷款资金划转后，借款人与债权人应向经营行提交（）。
A . A．购房债务已经结清的书面证明
B . B．房屋他项权利证书
C . C．前期购房债务书面证明
D . D．借款合同
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根据数据源的不同,可将视图分为
A．本地视图和远程视图
B．本地视图和临时视图
C．远程视图和临时视图
D．单表视图和多表视图
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世界卫生组织提出“预防出生缺陷”的策略是（）
A.“一级预防”策略 B.“二级预防”策略 C.“三级预防”策略
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根据有关规定，下列选项中，可以进行立案注销的事项是（）。
A．客户在报案后长达半年没有提交索赔资料
B．客户正式放弃索赔
C．理赔人员判断可以拒赔
D．以上均可以
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