消防泵组按泵组的辅助特征可分为：（）。
A.普通消防泵组
B.稳压消防泵组
C.深井消防泵组
D.潜水消防泵组
参考答案：A, B, C
句型转换。
1. She does her homework every day. (改为否定句)
She her homework every day.
2. It's time for breakfast. (同义句转换)
It's time breakfast.
3. Sandy helps Kitty and Kitty helps Sandy. (同义句转换)
Sandy and Kitty help .
4. I go to school every day. (用Millie代替I作主语)
Millie ______ to school every day.
5. I want to go to China's Space Museum. (同义句转换)
I go to China's Space Museum.
当鸡群出现稀粪时应采取哪些措施
