1.“括号” 优于 “NOT” 优于 “AND” 优于 “OR”
2.关系定律???
这个意思?
A AND B = B AND A
A OR B = B OR A
A AND B OR C = (A AND B) OR C
A OR B AND C = A OR (B AND C)
2.关系定律???
这个意思?
A AND B = B AND A
A OR B = B OR A
A AND B OR C = (A AND B) OR C
A OR B AND C = A OR (B AND C)
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货