花程式
参考答案:
把花的形状结构用符号(通常采用花各部第一个字母)及数字列成类似数学方程来表示的,叫花程式;通过花程式可表明花各部的组成,数目,排列,位置,以及它们彼此间的关系。
测定水中氟化物时,采集水样应使用哪种类型的容器()。
A.三角烧瓶
B.棕色玻璃瓶
C.聚乙烯塑料瓶
D.透明玻璃瓶
E.聚氯乙烯塑料瓶
Which of the following is/are possible causes for inefficiencies in the distressed securities market Ⅰ. They do not require much due diligence Ⅱ. Emotional reactions of selling investors Ⅲ. Investment restrictions of certain institutional investors()
A. Ⅰ and Ⅱ only.
B. Ⅱ and Ⅲ only.
C. Ⅰ and Ⅲ only.