泄放电磁阀（）
A.传送一个与车轮平均速度成比例的信号
B.使电液式双电磁阀通电
C.排放液体以减少后轮制动压力
D.防止后轮制动压力增加
参考答案：C
根据提示写单词。
1. You can look up the word in the d________ if you don't know it.
2. Don't ________ (fail to remember) to call me when you get there.
3. Mobile phones are ________ (流行的，普遍的) in the modern world.
4. Don't w________ water. Can't you see the sign "Save Water"?
5. They won the basketball match yesterday. The s______ was 5:3.
水泥浆搅拌结束至压入管道的时间间隔不得超过（）min。
A、20min
B、30min
C、40min
