A or B or C and D的布尔算符运算顺序是什么

布尔逻辑式 A AND (B OR C)展开以后是什么 在布尔逻辑检索中：1.（A AND B）OR C,说明ABC三个概念之间的关系是什么2.（北京or上海）and方言not Jim doesn\\\'t have a brother___sister?A.and B.and a C.or D. Peter has_____car______no house.A no and B no or C not and D 设a=3,b=4,c=-1,写出以下逻辑表达式的值.a-b/c-d or c>d and not c>0 or d she has a big head ( ) a small eyes A.and B.with c.or D.but =4,b=3,c=2,d=1下列表达式的值是a大于b+1 or c小于d and b mod c they drink the or coffe___eat bread or eggs.A.but B.and C.or 1.She is young,_____she konws a lot.A.and B.or C.but D.so Do you want a busy_____ exciting job?A.and B.or C.but D.so She has no brothers_____sisters.A.or B.and C.but D./ 答案是选A,除 已经a=3.5,b=5.0,c=2.5,d=true.表达式a>=0 and a+c>b+3 or not d的值是多少