用于重要、高速、重载机械中的滑动轴承的润滑方法是（）。
A、压力润滑
B、飞溅润滑
C、油环润滑
D、滴油润滑
参考答案：A
The Binary Ice Cream Shoppe sells two flavors, vanilla and chocolate. On Friday, the ratio of vanilla cones sold to chocolate cones sold was 2 to 3. If the store had sold 4 more vanilla cones, the ratio of vanilla cones sold to chocolate cones sold would have been 3 to 4. How many vanilla cones did the store sell on Friday ？（）
A.32
B.35
C.42
D.48
E.54
从应用上看，计算机将向着哪个方向发展( )
A．系统化和应用化
B．系统化、网络化和智能化
C．巨型化和微型化
D．简单化和低廉化
