问题
单项选择题
后张法施工中孑L道灌浆宜用调制的水泥浆水灰比不应大于______。
A．0.75
B．0.45
C．0.70
D．0.55
答案
参考答案：B
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后张法施工中孑L道灌浆宜用调制的水泥浆水灰比不应大于______。
A．0.75
B．0.45
C．0.70
D．0.55
参考答案：B
| 选择合适的句子补全对话。 | |
A: 1._______________________ B: No, they aren't. They are donkeys. A: 2.________________________ B: No, they aren't. They are goats. A: 3.________________________ C: No, they aren't. They are ducks. A: 4.________________________ C: Yes, they are. They are hens. |