问题：
[单选题]Which of the following items is necessary for all waste heat boiler installations, regardless of design or manufacturer? （）
A、Control of evaporation
B、A separate means to prevent feed-water contamination
C、Power circulating pump
D、Super-heater
参考答案：
A
相关内容
- ● Which of the following tatement i the theme
- ● Which of the following i true of the author?
- ● Which of the following item i neceary for all wate heat boiler intallation, regardle of deign or manufacturer? （）
- ● When the dieel i topped, which of the following item i wrong?（）
- ● Which of the following i NOT on the lit item to be recorded in Oil Record Book Part I (machinery pace operation)?（）
- ● ●Where box teting of oftware teting i a tet for oftware tructure.Which of the following item hould noe be included ing the content of white box? (75) .
- ● Which of the following fact i the lat?
- ● Which of the following i the bet title of the article?
- ● Which of the following i true of the text?
- ● Which of the following i true of the Hatche?
- ● Which of the following i true of the text?
- ● Which of the following i the reult of the volcanic eruption?
