问题
单项选择题
混凝土配合比中，水灰比是指( )。
A．水泥与水用量之比
B．水泥与细骨料用量之比
C．水泥与骨料用量之比
D．水泥浆与骨料用量之比
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
混凝土配合比中，水灰比是指( )。
A．水泥与水用量之比
B．水泥与细骨料用量之比
C．水泥与骨料用量之比
D．水泥浆与骨料用量之比
参考答案：A
| 完形填空。 |
| 1 the morning, Mary usually 2 up at 6:30. She eats 3 at seven o'clock and then she 4 to school. She has six classes at school. After school she often plays tennis. In the evening, she does her homework. She goes to bed 5 nine o'clock. |
| ( ) 1. A. On ( ) 2. A. get ( ) 3. A. breakfast ( ) 4. A. go ( ) 5. A. in | B. In B. gets B. lunch B. goes B. to | C. For C. to get C. dinner C. to go C. at |