题目内容
（请给出正确答案）
A．To test multiple conditions in the process of making a decision requires logical operators．
B．The keywords for the logical operators are AND , OR and NOT ．
C．The logical AND of two expressions is true if and only if each of the conditions is true
D．Truth tables deal only with cases in which all conditions are truthful ．
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（由简答题聘请的专业题库老师提供的解答）
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