A. To present an old painting to Russia. B. To return an old painting back to Russia. C. To make a visit to Russia. D. To be reconciled with the Russian Orthodox Church. 参考答案:B 答案解析:[听力原文29-30] The Roman Catholic Church says Pope John Paul has decided to return to Russia a r
第24题: [单项选择]X线胸片诊断为慢性肺源性心脏病的主要依据,下列不正确的是() A. 可有明显肺气肿或慢性肺部感染征象 B. 右心室增大 C. 肺动脉段突出,其高度大于等于3mm D. 右下肺动脉干横径大于等于15mm E. 右下肺动脉干横径与气管横径之比大于等于1.07 参考答案:C 答案解析:慢性肺源性心脏病的X线诊断标准。慢性肺源性心脏病的X线检查可见,肺动脉高压征:右下肺动脉扩张,其横径大于等于15mm,其横径与气管之比大于等于1.07,肺动脉段明显突出或高度大于等于3mm,右心室肥大