【单选题】在FeCl 2 和AlCl 3 的混合溶液中加入过量的氨水,直至溶液中沉淀的量不再改变为止。经过滤、洗涤、干燥、在空气中灼烧,最终剩余固体的成分是 ( )
【判断题】大腿长的测量是从股骨大转子到膝关节外侧间隙的距离。
【简答题】My grandfather had always taken a _______interest in my work, and I had an equal admiration for the stories of his time. A)splendid B)weighty C)vague D)keen
【单选题】制作一部精彩动画作品所必须优先考虑的是什么()。
【单选题】下列哪些属于按茶树品种命名() @font-face { font-family: "Times New Roman";}@font-face { font-family: "宋体";}@font-face { font-family: "Calibri";}@font-face { font-family: "微软雅黑";}p.MsoNormal { margin: 0pt 0pt 0....
A.
蒙顶黄芽 @font-face { font-family: "Times New Roman";}@font-face { font-family: "宋体";}@font-face { font-family: "Calibri";}@font-face { font-family: "微软雅黑";}p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: Calibri; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }
B.
铁观音 @font-face { font-family: "Times New Roman";}@font-face { font-family: "宋体";}@font-face { font-family: "Calibri";}@font-face { font-family: "微软雅黑";}p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: Calibri; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }
C.
金骏眉 @font-face { font-family: "Times New Roman";}@font-face { font-family: "宋体";}@font-face { font-family: "Calibri";}@font-face { font-family: "微软雅黑";}p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: Calibri; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }
D.
君山银针 @font-face { font-family: "Times New Roman";}@font-face { font-family: "宋体";}@font-face { font-family: "Calibri";}@font-face { font-family: "微软雅黑";}p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: Calibri; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }
【简答题】有一固体混合物 A, 加入水以后部分溶解 , 得溶液 B 和不溶物 C. 往 B 溶液中加入澄清的石灰水出现白色沉淀 D,D 可溶于稀 HCl 或 HAc, 放出可使石灰水变浑浊的气体 E. 溶液 B 的焰色反应为黄色 . 不溶物 C 可溶于稀盐酸得溶液 F,F 可以使酸化的 KMnO 4 溶液褪色 ,F 可使淀粉 -KI 溶液变蓝 . 在盛有 F 的试管中加入少量 MnO 2 可产生气体 G,G...
【单选题】启动“警惕控制”解锁时若警惕按钮故障失效,可使用显示器( )键代替。