设<img src="/lqwvjeImg/c5/c580eba691b783470f71010c5ebf8d28.png"><img src="/lqwvjeImg/9d/9de607712c507ec89b74b46eac3c6b42.png">则<img src="/lqwvjeImg/c5/c517efa484b39e7932043456f2bf47a5.png">( ).<br>·<img src="/lqwvjeImg/24/2443dd0537c4b6293a24b9f516c3761a.png" ;<br>·<img src="/lqwvjeImg/7e/7e3e0b59dc66fa6e92b59dcce3108027.png" ;<br>·<img src="/lqwvjeImg/9c/9cf44c1e8e5784d286991ad05dc4928b.png" ;<br>·<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/14830912606677a94299dc82344eeb109ee18e7e4a0ccimage11.png"

设

则

( ).
·

·<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/14830912606677a94299dc82344eeb109ee18e7e4a0ccimage11.png"

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