以下哪项是蒸汽发生器液位低的原因()。
A、过程气进口温度上升
B、蒸汽产量变大
C、酸性气量突然上升
D、蒸汽管网压力上升
参考答案:A, B, C, D
句型转换:按要求完成下列句子。
1. There is a tree in the garden. (就划线部分提问)
_____ in the garden?
2. He usually goes to Beijing by plane. (同上)
_____ _____ he usually go to Beijing?
3. Art is my favorite subject. (改为同义句)
I _____ art _____ of all subjects.
4. There is an old tea house near here. (改为复数形式)
There _____ _____ old tea houses near here.
5. I don't like this motorcycle because it's too old. (就划线部分提问)
_____ _____ you like this motorcycle?
教育制度就是指学校教育制度。