【单选题】若 x 3y = y 2x-5y = 6x-15y x ,则 4 x 2 -5xy+6 y 2 x 2 -2xy+3 y 2 的值是( )
【单选题】患者女,40岁。因患肺结核病,医嘱链霉素治疗,做链霉素皮试时发生过敏性休克而出现中枢神经系统症状,其原因是
【单选题】下列运用等式的性质,变形正确的是 [ ]
【单选题】He can speak English a native speaker.
【简答题】长期借款筹资与长期债券筹资相比,其特点是(筹资弹性大)。
【单选题】Can Mr. Smith, _____ native language is English, speak Chinese fluently? [ ]
【单选题】The constitutional guarantee of free speech may have been aimed at protecting native speakers of English from censorship, but it is not a great ______ to interpret it as protecting the right to expres...