问题
单项选择题
自阀手柄移置制动区后，制动缸表针不上升或上升后又下降为：（）。
A、制动缸管路漏泄（单阀制动良好）
B、主阀总风限制堵φ2.1毫米小孔半堵
C、降压风缸管系大漏
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
自阀手柄移置制动区后，制动缸表针不上升或上升后又下降为：（）。
A、制动缸管路漏泄（单阀制动良好）
B、主阀总风限制堵φ2.1毫米小孔半堵
C、降压风缸管系大漏
参考答案：C
| Complete the sentence with the proper phrase in the box. (用方框里适当的短语完成句子。) | |
2. Our new English teacher, Mr.White, _____ the school today. 3. It's getting late. It's time to _____. 4. If you _____, you can get along with your  classmates.5. The hat under the table _____ a cat. 6. We think keeping pets _____. 7. Which man? The one _____. 8. They are _____. They are very happy. |