分批培养(batch culture)
参考答案:
是指微生物在封闭系统中进行的培养,培养过程中不对培养基进行更换。
按要求完成下列句子。
1. He has a brother and a sister.(改为一般疑问句)
he any brothers or sisters?
2. Open the window.(改为否定句)
the window.
3. She is watching cartoons at home now.(改为一般现在时)
Sometimes she at home.
4. Jim is good at PE.(改为同义句)
Jim in PE.
5. We saw a play last Sunday. (用tomorrow替换last Sunday)
We are see a play tomorrow.
6. 秋天是北京最好的季节。(汉译英)
It's the in autumn in Beijing.
下列房屋不得出租的有()。
A.属于违章建设的房屋
B.被司法机关查封的房屋
C.未取得房屋权属证书的房屋
D.其他房屋共有人不同意出租的房屋
E.已购公有住房