为保证工?的耐久性,港口与航道工程结构混凝土所用水泥的强度等级不得低于()。
A.32.5级
B.42.5级
C.52.5级
D.42.5R级
参考答案:A
Which of the following statements is implied in the passage
A.Anthropologists have nothing to do with linguists.
B.Linguists have nothing to do with anthropologists.
C.The study of languages casts light upon the study of cultures.
D.The study of cultures casts no light upon the study of languages.
高血压病的治疗原则
低危患者
A.立即进行抗高血压治疗B.立即开始抗高血压药物治疗C.观察相当一段时间,再决定是否进行药物治疗D.先观察(血压及危险因素)数周,然后决定是否进行药物治疗E.一经诊断,立即开始对高血压及并存危险因素和临床症状进行药物治疗