问题
单项选择题
在ABS液压制动总成中，进液阀打开，出液阀关闭是在何模式下？（）
A.压力增加
B.压力调节
C.压力下降
D.压力保持
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
在ABS液压制动总成中，进液阀打开，出液阀关闭是在何模式下？（）
A.压力增加
B.压力调节
C.压力下降
D.压力保持
参考答案：A
| 阅读短文，根据上下文意思，将方框中的句子还原到短文中适当位置。 | |
| It was March 15, 2010. We went to Li Jiang's home and took part in her birthday party. 1______ Some hung up colourful lights in the room. Some put candles on a big cake. Everyone brought her a present. But all the presents were not opened at the time. 2______ When her mother came back, the party started. First,some girls sang pop songs and danced together. 3______ Everyone laughed happily. Then, Li Jiang did some magic for us. 4______ The happiest things were that we blew out candles and ate the cake together. We all expressed our best wishes to her. Finally, we helped her open the presents. All kinds of toys appeared in front of us! Li Jiang was very happy that day and so were we.
|