what chemicals did you use to treat the boiler water ?when you test alkalinity and acidity of water in boiler by pH test paper ? the result shows the boiler water is in acidiity . please describe what the possible cause is .

[单选题]Did you use to play the piano?- _________。A.Yes, I do.B.No, I didn't.C.Yes,

[主观题]Q： What contribution did you make to your current (previous) organization？(你对目前/从前的工作单位有何贡献？)

[主观题]What decisions or judgment calls did you have to make in these areas?在这些领域，你需要做哪些决策或判断？

[主观题]What technical decisions did you have to make?你需要做哪些技术性的决策？

[主观题]What percentage of your college did you college did you pay for and what sort of jobs did you have while you were in school?

[主观题]What records did you get at college?

[主观题]Q：What leadership qualities did you develop as an administrative personnel？(作为行政人员，你有什么样的领导才能？)

[主观题]What grades did you get at high school?

[主观题]What did you learn from your internships or work study experiences?

[问答题]What did I say to cause you to do that?.