Black smoke coming from a boiler can be caused by ____ .
A、lowwaterlevel
B、lowoilpressure
C、excessivelyhighfuelpressure
D、animproperair/fuelratio
发布时间：2025-11-15 10:35:51
请在 下方输入 要搜索的题目：
推荐参考答案 (
由 题搜搜 官方老师解答 )
答案：D
相关试题
- 1.Black smoke coming from a boiler can be caused by ____ .
- 2.in starbucks,customers can smoke
- 3.From where does she think the crying is coming from?
- 4.Blue nails can be caused by:
- 5.My wife is coming from Tokyo, but I forget her _____ .()
- 6.donkey boiler
- 7.can black quarter spread via infected droplets in the air
- 8.What can you learn from this story?( )
- 9.A chemist can _the oxygen from hydrogen in water.
- 10.Can you __________(辨认出)her from this picture?
