V型滤池反冲洗过程中气水同冲时水冲强度为()L/s•m2。
A、1~2.5
B、2.5~4
C、4~5.5
D、5.5~7
参考答案:B
根据句意完成句子。
1. You can't _____ (穿过) the street. There are too many cars.
2. Please pay attention to your _____ (发音), Li Ming.
3. —How many kinds of _____ (语言) can you speak?
— Three.
4. —What do you like to do on _____ (周末)?
—I like taking pictures.
5. I will _____ (返回) my hometown tonight.
中和反应在日常生产和生活中有广泛的用途。下列做法应用了中和反应原理的是[ ]
A.用生石灰作食品干燥剂
B.用熟石灰处理工厂污水中的硫酸
C.用碳酸氢钠和柠檬酸等原料自制汽水
D.用熟石灰与硫酸铜溶液配制农药波尔多液