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一、选择题(每小题5分,本题满分60分)1.在下列不等式中,一定成立的是.‘D)椭圆磊十芳一1(机。,儿。)的焦点坐标是Fl(一了丽不丽乏,。),凡(丫而不万矛,0)9︺毛y工十委工y(A)文一4x一5(B)(粤)工。 j‘不等式组!表示的平面区(C)矿十1Za2.设函数了(x)(D)sin3sinl域是(x3一3二
First, the multiple-choice questions (5 points for each question, this question marks a perfect score of 60 points) 1. In the following inequality, it must be established that the ’’D) elliptic Lei Shifang 1 (machine., child.) The focal coordinate is Fl ( One is not Lili,.), Where (Yao but not million spears, 0) 9〕 Mao Y workers ten commissioned y (A) Wen Yi 4x a 5 (B) (Guangdong) workers. j ‘inequality group!” represents the plane area (C) mine ten 1Za2. Let function (x) (D) sin3sinl field be (x3 a 3 2