【单选题】是指挥员在实施现场指挥时的重要辅助手段()
【简答题】Translation: 4. We stood all alone a year ago, and to many countries it seemed that our account was closed.
【简答题】We stood all alone a year ago, and to many countries it seemed that our account was closed, we were finished.
【简答题】根据公告内容的不同,公告可分为: 、 、 、 。
【简答题】We stood all alone a year ago, and to many countries it seemed that our account was closed, we were finished.
【简答题】1mol H 2 理想气体初态为 373.15K,10.0dm 3 ,反抗恒外压 p θ 迅速膨胀到终态温度 244.0K,p θ 压力。求此过程的 W,Q,ΔU,ΔH , Δ S 。