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已知直三棱柱ABC-A1B1C1的各棱长均为1,棱BB1所在直线上的动点M满足,AM与侧面...
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已知直三棱柱ABC-A
1B
1C
1的各棱长均为1,棱BB
1所在直线上的动点M满足
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEsAAAAeCAYAAABkDeOuAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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J6uT1cAAD7pcSYg/Aw79i4aX7e2iOlkNtelkdbIaGGiAfgFSDToJSag01wAAAABJRU5ErkJggg==
)
,AM与侧面BB
1C
1C所成的角为θ,若λ∈[
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC4AAAAkCAYAAAD2IghRAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAc9JREFU
WEftl4ERgyAMRXEj93ELhnAJdnAA5+CuO7gEJVY9kACxJG29q3e9KmeSZ0h+tHP+UKej67rzEnqN
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GHun+hEtlU9pdQQeDj/fXSaY3ImOQ9ap2yXxMNFuF4bf9QEkQRv4LCYNht/WXD/34l0Ct0YdogAf
I0jz0db2RO0+ODYjCx7Vu1c+rmBcfYH7WdysYyVjAc8NrWpSiFPbGu3Ob9Is4O9mmzK1k4m9DT8c
PPziEX6pWnclM7WhGXPDLwUviH516xtuwKZ2yV0C/q0vnqtTu17jgeg3JJRkemVqV8FD0SdFb7yJ
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bcaf0+KhaMxkXycAAAAASUVORK5CYII=
)
],则θ的取值范围是( )
A.[
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAAjCAYAAABLuFAHAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAPJJREFU
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ODM7L1utT2xHcPjqk0VvK89gRm+Q92A3f4ihu7ZNuph2XlUemTbN8QhWhl0QFNKu6wY2iWFTQwmK
BunheMy/ai9J/rtPRb1FBlg9AAAAAElFTkSuQmCC
)
,
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAjCAYAAABGpiBAAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAANJJREFU
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WN9/8bPFFrfSknH/n6gswudDptl7CtwOuP+8R8WcT4OrB1FbwmDU8I2xt6Ro6LILcmSoooU1GkEV
mV+7FaCgn9HxjD9Ep8YlwVP4zPX3RVh3LxeiWqlfgXk5vhcoRz5Wn9bxVgAAAABJRU5ErkJggg==
)
]
B.[
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACEAAAAjCAYAAAAaLGNkAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAWNJREFU
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4v207SVRZPsHcYVl0heo2a0AAAAASUVORK5CYII=
)
]
C.[
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAjCAYAAABGpiBAAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAALtJREFU
OE/FU9sNxDAI41ZmHTZhDqZgCQokae/aPPqVQ6oUpZZtwPmYF6wqQKuCFSCVtoPECCA6fHzImm5A
iEz8oEyWd8qGyFZ+lzqNC2EBCRn0QWqMhTFBlKcbU0hAk8UeKFjcdJVQdlA9C3P1lCxgrZM0Xjtt
qvsnvl5xxK27knb/n6h8Gy/Tv63uN765Em9kDPJ1EMuMyWUogjaROwM3BHnILg8DJqH5I+hM/MUI
/Kms5/QS1I/N5vgewqNM6H48HpEAAAAASUVORK5CYII=
)
,
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAjCAYAAABGpiBAAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAMZJREFU
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+Mz3F9+pCErPEfQvlyUXvl/4F9zJ/ALF9k9a19NXMAAAAABJRU5ErkJggg==
)
]
D.[
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAjCAYAAABGpiBAAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAMZJREFU
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jqrPT/y+4o5buZJx/w4qufnhbdtbemo8za0HW7sOTPWHHaFKtI6pwGSDLudVe1pS7UTs+A7pytPB
+Mz3F9+pCErPEfQvlyUXvl/4F9zJ/ALF9k9a19NXMAAAAABJRU5ErkJggg==
)
,
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAjCAYAAACdHYpiAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAATBJREFU
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eXvrb8d+O7/XCw9J2xK+hi6jIu9ttUEAAAAASUVORK5CYII=
)
]
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