【单选题】I was about to make my little bow of assent, when the meaning of these last words sank in, jolting me out of my sad reverie. (Para. 18)
A.
When I was about to nod my head to show my agreement, suddenly the meaning of the mayor’s words were understood , which surprised me from my daydreaming.
B.
I was about to bow to show my agreement, at that time the meaning of these last words fall down, jolting me out of my sad daydream.
【简答题】如图所示,气缸A和气缸B相连。气缸A是刚性的,体积为0.1m 3 内充有0.6MPa,300K状态下的理想气体,其R g =0.5kJ/(kg·K),κ=1.3。气缸B是垂直的,装有一个无摩擦力的密封活塞,活塞的重量和外界大气压力可产生0.3MPa的恒定压力,外界大气压力为0.1MPa。初始时刻活塞在气缸B底部,两个气缸及其相连的管子都是绝热的,与管子相连的阀门虽然关闭,但有缓慢泄漏,使得容器A中...