高铁隧道工程回填注浆应在衬砌混凝土强度达到()以上后进行。
参考答案:设计强度100%
情景交际
根据对话内容,从对话后的选项中选出能填入空白处的最佳选项,并在答题卡上将该项涂黑.选项中有两项为多余选项.
A: Hello, 1
B. Hello! 2
A: I'm sorry he is out. He's at the cinema at the moment.
B: Is that Mrs. Brown?
A: Yes. 3 Do you have anything important to tell Tom? 4
B: Sure. This is Bill. We're going to have a picnic next Sunday. Please remind him to bring
something to drink.
A: OK. I'll leave the message on his desk.
B: 5 Bye!
A: Bye.
A. Can I take a message?
B. Thanks a lot.
C. 85776186.
D. This is Tom's mother. E. Speaking.
F. Can I speak to Tom?
G. Who is that speaking?
消除应力裂缝