水泥浆搅拌结束至压入管道的时间间隔不应超过()。冬季压浆时应采用()措施。
参考答案:40min;保温
用所给词的正确形式填空。
1. In China, it _________ (depend) on where you are.
2. That must _________ (be) more fun than _________( take) a bus.
3. In Japan, the three most popular ways of _________ (get)
to school _________ (be) bus, train, bike.
4. A number of children __________ (plant) trees over there.
5. The number of the children _________ (be) over 300.
6. When it _________ (rain), I take a taxi.
7. He usually goes to work on __________ (feet),
but this morning he __________ (get) a _________ (ride).
由于西方工业文明的传人,中国的社会生活变得更加丰富多彩,但这些深刻的变化也是以我们中 * * 沦人半殖民地半封建社会的灾难深渊为代价的。你认为这种观点对吗?请说明理由。