题目: 下图为某区域模式图,读图回答下题。关于图中各区域河流水文特征的叙述,正确的是()A.①区河流水位季节变化小B.②区河流春汛长于夏汛C.③区河流含沙量大,有结冰期D.⑥区河流汛期短,径流量季节变化小 答案: 参考答案:C
题型:选择题 To value time, one should live each day as if it _____ the last day of life.[ ]A. is B. will be C. were D. had been 查看答案
题型:单项选择题 A1/A2型题 下列哪项叙述不是硝苯地平的特点()A.对正常血压者有降压作用B.对轻、中、重度高血压者均有降压作用C.降压时伴有反射性心率加快和心搏出量增加D.可增高血浆肾素活性E.合用β受体阻断药可增大其降压作用 查看答案