问题
多项选择题
下面是对牵引部的基本要求有（）。
A、总传动比大
B、要在电动机转向一定的条件下反向牵引和停止牵引
C、要有足够的强度
D、总传动比应能在工作过程中随时调节
E、要有可靠的过载保护性能
答案
参考答案：A, B, C, D, E
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下面是对牵引部的基本要求有（）。
A、总传动比大
B、要在电动机转向一定的条件下反向牵引和停止牵引
C、要有足够的强度
D、总传动比应能在工作过程中随时调节
E、要有可靠的过载保护性能
参考答案：A, B, C, D, E
| 辨析填空。 | |||
2. At that time, the whole country was in a _____ of war. 3. When you get there, have a look of the _____ and decide what to do.
5. This country was _____ on the principle of individual freedom for all. 6. The primary school in that poor village was _____ in 2003 with the help of some kind people. 7. They _____ a tent when they go there.
9. Unless we get more funding we'll be _____ from finishing our experimental program. |