【单选题】热量是决定药用植物能否复种的首要条件,一般用积温表示,当积温在3600-5000°C之间的地区,熟制为( )
【单选题】王某,急性上呼吸道感染,体温8°C,遵医嘱口服阿司匹林,正确的用药指导是
【简答题】已知二叉树中叶子结点数为50,仅有一个孩子的结点数为30,则总结点数为____。
【单选题】对于密闭容器中的反应:N 2 (g)+3H 2 (g) 2NH 3 (g),在673K、30MPa下,n(NH 3 )和n(H 2 )随时间变化的关系如图所示.下列叙述正确的是( )
A.
NH 3 在点a′的正反应速率比点b′的正反应速率更小
C.
点d(t 1 时刻)和点e(t 2 时刻)处n(N 2 )不一样
【判断题】对于 N 2 (g)+3H 2 (g)=2NH 3 (g) 1/2N 2 (g)+3/2H 2 (g)=NH 3 (g) 两个反应方程式而言,如果均生成3mol
NH 3 ,两个反应完成的反应进度是一样的。
【单选题】Though he was going to the airport, _____ he was in no hurry.
【单选题】已知二叉树中叶结点数为50,仅有一个孩子的结点数为30,则总结点数为()
【简答题】It was time for a haircut. Lenny didn't even have to look in the mirror. Even though he was going bald, he knew that he needed to cut his hair every two weeks. He had a tongue of hair on the top of hi...
【简答题】把原形动词变为适当的时态和人称: Daniel (ir) _____ a Barcelona la semana pasada.