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计算型多解选择题最先出现在高考题上,近年来出现在中专考题和初中内容的有关化学刊物上。对于这一类选择题的求解,往往比单纯的一个答案的计算型选择题较为复杂。计算型多解选择题虽然难度较大,但也有规可循,常见有以下几种类型。 一、一题多方法解的选择题 这类选择题的目的相同,但它可以从不同的条件或采用不同的方法来实现。故可能有多个答案。 例1.W克10％的食盐溶液要使其浓度增大一倍,可采用的方法是( )。(1988年高
Computational multiple-choice multiple-choice questions first appeared on the college entrance examination questions, and in recent years appeared in the relevant chemical journals of secondary school exams and junior high school content. The solution to this type of multiple-choice questions is often more complex than a simple one-by-one answer. Although it is more difficult to solve multiple-choice multiple-choice questions, there are also rules that can be followed. There are several common types. Multiple choices for one or more questions Multiple choice questions have the same purpose, but they can be implemented in different conditions or in different ways. So there may be more than one answer. Example 1. Wg 10% salt solution to double its concentration, the method can be used (). (high in 1988