这个表达式对应的真值表的哪几行L的值为1？<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/c38e5c03802a481a953d194c848bcb81.png?x-oss-process=image/sharpen,200"/><img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/ac6ddbc585704809a9625c030b3a9491.png?x-oss-process=image/sharpen,200"/>