下列关于石灰在土木建筑工程中的应用表述错误的是( )。
A.配制水泥石灰混合砂浆、石灰砂浆 B.拌制灰土或三合土C.生产硅酸盐制 D.不可用作内墙和顶棚的粉刷涂料
参考答案:D
等差数列{an}的前5项和S5=25且a2=3,则a4=( )。
根据要求完成句子。
用settle短语的适当形式填空。
1. I must ____ this morning and finish the term paper.
2. In these years, it is hard to ____ a good job.
3. He needed ten yuan, to ____ this bill.
用bargain短语的适当形式填空。
4. The salesman refused to ____ the price.
5. Dealers ____ growers over the price of coffee.
6. I didn't ____ your arriving so soon.