【单选题】
下列等价式正确的是()
①
┐<imgwidth="83"height="20"src="../uploadfiles/word/lsss001.files/image001.png">┐A
②
<imgwidth="147"height="20"src="../uploadfiles/word/lsss001.files/image002.png">
③
┐<imgwidth="86"height="20"src="../uploadfiles/word/lsss001.files/image003.png">┐A
④
<imgwidth="248"height="20"src="../uploadfiles/word/lsss001.files/image004.png">
【单选题】
下列等价式不正确的是( )
①
<imgwidth="215"height="20"src="../uploadfiles/word/lsss002.files/image010.png">
②
<imgwidth="215"height="20"src="../uploadfiles/word/lsss002.files/image011.png">
③
<imgwidth="210"height="20"src="../uploadfiles/word/lsss002.files/image012.png">
④
<imgwidth="166"height="20"src="../uploadfiles/word/lsss002.files/image013.png">