抢救有机磷农药中毒时，阿托品的作用主要是对抗（）
A.毒覃碱样症状
B.烟碱样症状
C.中枢神经系统症状
D.中毒后"反跳"
E.中间综合征
参考答案：A
已知|2x+1|+|y﹣3|=0，那么2x﹣y=（ ）．
The figure above shows the dimensions ofa rectangular board that is to be cut into four identical pieces by making cuts at points A, B, and C, as indicated. If x=45, what is the length of AB ？(1 foot=12 inches)
