汽包运行中常见的故障包括：（）、（）、（）。
参考答案：水渣的聚集；加药管断裂或堵塞；汽水分离等装置的松脱移位
The report newly released urged that all children to swim. [ ]
A. should teach
B. would be taught
C. would teach
D. be taught
水对路面的影响
