【单选题】动脉导管未闭在婴幼儿期或在有肺动脉高压或合并心力衰竭时,其杂音特点是:
【单选题】动脉导管未闭在婴幼儿期有肺动脉高压或合并心衰时:
A.
胸骨左缘二、三肋间Ⅱ-Ⅲ级较柔和收缩期杂音;
【单选题】对于一个标准直齿圆柱齿轮,下列叙述正确的为( )。
【判断题】If the diabetics are planning to drink alcohol, they shouldn't drink on an empty stomach.
【单选题】动脉导管未闭,在婴幼儿期或在有肺动脉高压或合并心力衰竭时,其杂音特点是