下列说法正确的一项是[input=type:blank,size:4][/input]
未知类型：{'options': ['[tex=7.857x1.286]/pCzOGAKfsvOYpUiHeTBxIHG0EmZuE4b3gjzHwsfXjQ=[/tex]是接口', '[tex=2.929x1.286]wHVmqbBpasBtKI7JboAHaQ==[/tex]定义在[tex=4.0x1.286]RMyc7J0hsusWiWmID1uuNQ==[/tex]包中[br][/br]', '[tex=3.071x1.286]E/3+oPMwuGTYMAueVS7Njw==[/tex]类在[tex=4.214x1.286]GIom88Hl3hyiqG4j+vHZQw==[/tex]包中', '[tex=3.071x1.286]E/3+oPMwuGTYMAueVS7Njw==[/tex]类在[tex=7.071x1.286]NWXllUdI4kvId9OTeZfiTHcL0p3YRxbaRaBJb9iCfQI=[/tex]包中'], 'type': 102}
未知类型：{'options': ['[tex=7.857x1.286]/pCzOGAKfsvOYpUiHeTBxIHG0EmZuE4b3gjzHwsfXjQ=[/tex]是接口', '[tex=2.929x1.286]wHVmqbBpasBtKI7JboAHaQ==[/tex]定义在[tex=4.0x1.286]RMyc7J0hsusWiWmID1uuNQ==[/tex]包中[br][/br]', '[tex=3.071x1.286]E/3+oPMwuGTYMAueVS7Njw==[/tex]类在[tex=4.214x1.286]GIom88Hl3hyiqG4j+vHZQw==[/tex]包中', '[tex=3.071x1.286]E/3+oPMwuGTYMAueVS7Njw==[/tex]类在[tex=7.071x1.286]NWXllUdI4kvId9OTeZfiTHcL0p3YRxbaRaBJb9iCfQI=[/tex]包中'], 'type': 102}
举一反三
- 下列方程中是一阶微分方程的是[input=type:blank,size:4][/input]. 未知类型：{'options': ['[tex=8.0x1.571]SnLzj4UlSfnGqNtEzxfZSuZwslGsWxsvP2Y+yf7H578Vefe1Ol/nJT135DjkdnSNNikL3arAj80BjvPHaHCDiA==[/tex]', '[tex=10.571x1.571]JR4yrHJRIZfJXwhFSObwrfajFnWUvXzM/YiA3M6aDKuVBZ8I+7v5iXTXdA3E6Rm4vOE2BCfPwFP2rmRygXKEUDk1qLsNDCJ2p8GEbfCSr2s=[/tex]', '[tex=5.643x1.357]m0sKckxx+jZ9iltApBtB23TBISIOx/g0judcsS+akNFZrUNCq3g+BIVQwGbQEh/C[/tex]', '$y^{(4)}+5 y^{\\prime}-\\cos x=0$'], 'type': 102}
- 设随机变量 [tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex] 服从参数 [tex=3.143x1.286]+YbFeYrJMNsGfJf0KraF7SPelDX5xgqsp9CtXCLBwA8=[/tex] 的指数分布,则 E(X)= [input=type:blank,size:4][/input], D(X) =[input=type:blank,size:4][/input].
- 向量[tex=5.643x1.286]UOUVlYY3Owd/9Y+4aGhD2Q==[/tex]在[tex=4.786x1.286]x/DRKltwGOjd6FFY9joZ6Q==[/tex]上的投影[tex=3.286x1.286]wGfVdUMgAn5LMrF8O6yYwV3vkaAQ2TFHZKAYsbp88SY=[/tex][input=type:blank,size:4][/input]，[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]在[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex]上的投影[tex=3.286x1.286]7pOAdpiq9AgleNydFoH1oLiJcqz06HIbtdLTBglKvE4=[/tex][input=type:blank,size:4][/input]．
- 下列关于一元线性回归方程和相关系数的关系，错误的有[input=type:blank,size:6][/input] . 未知类型：{'options': ['[tex=7.0x1.286]3MLBT5/vXhbER5Xw5xRXlCzvyvWAricQrIdr5f7KtJ8=[/tex]，[tex=3.786x1.286]x/PZ10mfawCpm6uF3YeQZQ==[/tex]', '[tex=7.0x1.286]00xdabWduzRJwWhkeHAIrXyRi9DIufr357xNXVZR60Q=[/tex]，[tex=3.071x1.286]qxUp+OtnLqE/WgqAL4wi5Q==[/tex]', '[tex=5.5x1.286]TZmiu0p8eBg7eJ5WeqbxHlszNHstL61dd8SDEij6MJ0=[/tex]，[tex=3.071x1.286]+9CAxHocicOeruXEx/s9JA==[/tex]', '[tex=7.0x1.286]BfarU7srnEBJHCwqU1yt9gpnu7DswRnMWsBBVEt9JoM=[/tex]，[tex=3.071x1.286]qxUp+OtnLqE/WgqAL4wi5Q==[/tex]', '[tex=6.286x1.286]OyOtrunegbGTJ/m5NV6H0iBGigJ4fr/Q8FhxZqV0URg=[/tex]，[tex=3.071x1.286]+9CAxHocicOeruXEx/s9JA==[/tex]'], 'type': 102}
- 设[tex=4.143x1.071]6idyQcG7/Vy7BKdtLzpTsg==[/tex], 则下列选项中唯一正确各为[input=type:blank,size:4][/input]。 未知类型：{'options': ['[tex=3.071x1.286]qHTP6OokY9sli9iHBfBENg==[/tex]', '[tex=3.143x1.286]QbYSeDnqhmTCLKiEbDEMHJiwRFLi270TrLsO3lEqRzU=[/tex]', '[tex=3.071x1.357]YMQnid5nAkYNukmyLphQGTJX+cbU3yF8dcsebd0FcBA=[/tex]', '[tex=3.071x1.357]pwve694dU0p+NM98nKISy8udcWTFZVi1zx4E0lnpoLY=[/tex]'], 'type': 102}