【多选题】
下面逻辑式中,正确的是______。
①
A<imgwidth="20"height="27"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj11.files/szlj112566.png">+BD+CDE+<imgwidth="82"height="27"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj11.files/szlj112597.png">+D
②
A<imgwidth="252"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj11.files/szlj112625.png">
③
<imgwidth="185"height="24"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj11.files/szlj112650.png">A⊙B⊙C⊙D⊙E
④
ABCD+<imgwidth="64"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj11.files/szlj112689.png">=1