连铸机液压系统由那几部分组成？
参考答案：
由高压泵站、、中包车液压站、钢包液压站、扇型段液压系统等组成。
□84÷52，要使商是两位数，方框里可以填[ ]
A. 0~9
B. l~4
C. 5~9
根据括号中的要求改写下列句子。
1.We went to the post office to send a letter.(改为一般疑问句)
you to the post office to send a letter?
2.The pandas need to eat bamboos.(对画线部分提问)
the pandas need to eat?
3.It's important to learn English well.(改为同义句)
English well very important.
4.There are some animals in danger.(改为否定句)
There animals in danger.
5.We mustn't pollute rivers.(改为祈使句)
rivers!
疑问句)
l.(改为同义句)
pollute rivers.(改为祈使句)