设[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]是一随机变量，[tex=1.214x1.286]ywJhPpsrK/zutVlpmSO1aw==[/tex]为任意实数，[tex=1.714x1.286]p+zOLBbKURbVjWbmuQcavg==[/tex]为[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]的数学期望，则有[input=type:blank,size:6][/input] . 未知类型：{'options': ['[tex=12.429x1.286]q8HyMzYbNdS1m5JUH9I4P2hQkYCLaYrqtxCkFw7B/sNfba/3vR/wvSOSMJOWk78q[/tex]', '[tex=12.429x1.286]q8HyMzYbNdS1m5JUH9I4P2ulDzbX1WJGk5hIN2LNVZWDlNVuxPvZEsiV3Cup+6g7[/tex]', '[tex=12.429x1.286]q8HyMzYbNdS1m5JUH9I4P43nhMlotD7qMdvbP2wr7qcU8ZwIGcFbGu9PHX0MceTbQAQjho10ZtEiYsmPIVEROw==[/tex]', '[tex=7.214x1.286]q8HyMzYbNdS1m5JUH9I4P7W9T0H0r3AUr6X06QcrlSNOXiTxR1DoUbzN1GIHu6tj[/tex]'], 'type': 102}