A、<span style="font-family: 宋体; line-height: 18.88888931274414px;">关系表达式</span>
B、<span style="font-family: 宋体; line-height: 18.88888931274414px;">逻辑表达式</span>
C、<span style="font-family: 宋体; line-height: 18.88888931274414px; text-indent: 16px;">算术表达式</span>
D、<span style="font-family: 宋体; line-height: 18.88888931274414px; text-indent: 16px;">任意表达式</span>