旋耕机的碎土性能与机器运动参数有何关系？
参考答案：
碎土性能与拖拉机前进速度及刀轴转速有关。刀轴转速不变时，增大机组前进速度则土块增大，反之则减小。
- My best friend is more popular than me. I want to be like him.
-I think you should be more friendly,
A．look like
B．the same for
C．as popular as
D．so friendly as
阳明温病，津液不足，大便秘结，或下后二三日，下证复现，脉沉无力者，治宜选用
A．增液汤
B．麻子仁丸
C．增液承气汤
D．新加黄龙汤
E．以上都不适宜
