第6题:[单选题]( )S1:How many shackles are left to come in? S2:4 shackles are left. Q: What is the vessel most probably doing? A.She is letting go anchor B.She is heaving up anchor C.She is walking back anchor D.She is hoisting anchor ball 参考答案:B
第19题: [单项选择]慢性肺源性心脏病的X线诊断依据是 A. 心脏突然增大,肺动脉段突出,上腔静脉扩张 B. 肺部淤血,肺动脉高压,右心室增大 C. 肺血管增粗,右心房增大,肺动脉段突出 D. 肺部慢性病变,肺动脉高压,右心室增大 E. 肺部充血,肺循环高压,右心房增大 参考答案:D 答案解析:慢性肺源性心脏病原发病常为慢性支气管炎,引起肺循环阻力增加,致使肺动脉压升高,导致右心增大,伴或不伴有充血性心力衰竭。