JK00430走行部监测装置对电机半悬挂的机车每条轴有（）个测点。
A、3
B、4
C、5
D、6
参考答案：D
车辆通过速度为（）。
用所给单词的适当形式填空。
1. It's _ __ _ (sun) today. We had better climb Mountain Tai.
2. -Is it (snow) now?
-Yes. Look, everything is white.
3. Look! What your friends _(do)?
4. The boy _ (eat) ice cream there now.
5. Let's _ (play) computer games.
