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2018(3-4)快


快 (90 100 ) ( 10 妊妊 4 40 妊孝快妊 快妊忪 4 2 0 ) 1.忍快( ) A B C D D.竹忍竹 竹 汐 汐 ㄖ 2.( )妊() () 孝( ) A妊 B C D妊妊妊快 D.孝妊 妊A 竹B 竹 妊忍 妊 妊 C 竹孝妊迄 妊妊快D 3.霿 500 Hz ( ) A B C D澼 500 Hz D.污澼 500 Hz 4.忍 N 污竹 OO1 快污 N1 N2 v1 v2 v22v1 N1N2 T1 T2 ( ) AT2T1 CT24T1 1 DT2 T1 4 BT22T1 x1 x2 t1 v2 2 D. x1x2 t1 t2 v22v1 t1T1t2 v1 v2 t2 v1 1 2T2 T1 2 T14T2.

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