[Talk] I just came across a description

看板EngTalk (全英文聊天)作者serveto (miguel)時間17年前 (2008/06/08 14:08)推噓0(0推 0噓 0→)

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Which, a question, states, (I've translated into English) "Which of the following has the lowest bacteriocidal activity, cannot destroy tuberculous bacillus?" (A)ethyl alcohol (B)quaternary ammonium compounds (C)chlorine compounds (D)phenolics -- Since the clause "has the lowest bactericidal activity" and "can't kill tuberculous bacillus" don't have any logical coordinator in-between, I couldn't help but wonder--the intention of this question is to want me to choose an item which fulfils both of the conditions, or only one of them can do? If the constraint "with lowest bactericidity" is designated X, "unable to kill tuberculosis bacillus" Y, then X and Y has categorized the universe into four groups (abstractly speaking, the degree of freedom is stirred, restructured, and limited): That which with lowest bactericidity, and unable to kill tuberculosis bacillus That which without lowest bactericidity, and unable to kill tuberculosis- bacillus That which with lowest bactericidity, and able to kill tuberculous bacillus That which without lowest bactericidity, and able to kill tuberculous bacillus -- In view of the description "has the lowest bactericidal activity" is before the latter, we, as human beings, are more prone to a judgement giving the first more weightage than the second. So let us see if now the question only were: "Which of the following has the lowest bactericidal activity?" A predicament arises. How do we define a compound as lowest bactericidal? Based on how many germs it can terminate in a specific interval of time? If that, then we would have another difficulty as to how to conduct the experiment to prove that. -- So, this question is essentially in the second--whether or not it can kill tubercle bacillus? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 163.25.118.134