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【单选题】
砂浆的粘结力与砖石表面清洁、潮湿、养护条件等有关，所以砌墙抹灰前对砖及墙浇水湿润，其含水率控制在（）左右，目的是提高砂浆与砖之间的粘结力。A.
5%~10%
B.
10%~15%
C.
15%~20%
D.
20%~25%
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【单选题】Which of the following statements is correct about propagation rules?
A.
In the MF/HF band, Iow frequency is selected for long distance communication.
B.
The frequency selected during nighttime is lower than that selected during the daytime if the receiver is the same one.
C.
In the MF/HF band, the frequency selection bas nothing to do with the communication distance.
D.
The frequency selected during daytime is lower than that selected during the night time if the receiver is the same one.
【单选题】建设项目工程造价的组合过程是
A.
分部分项工程造价 →单位工程造价→单项工程造价→建设项目总造价
B.
单位工程造价 →分部分项工程造价→单项工程造价→建设项目总造价
C.
分部分项工程造价 →单项工程造价→单位工程造价→建设项目总造价
D.
单项工程造价 →分部分项工程造价→单位工程造价→建设项目总造价
【单选题】建设项目工程造价的组合过程是():
A.
分部分项工程造价→单位工程造价→单项工程造价→建设项目总投资
B.
单位工程造价→分部分项工程造价→单项工程造价→建设项目总投资
C.
分部分项工程造价→单项工程造价→单位工程造价→建设项目总投资
D.
单项工程造价→分部分项工程造价→单位工程造价→建设项目总投资
【单选题】According to Bas Lansdorp, which of the following is NOT TRUE?
A.
For a one-way trip to Mars, all the technology exists.
B.
He could not come up with the fund for Mars One.
C.
We humans have the rockets to send people to Mars.
D.
We humans have the equipment to land on Mars.
【简答题】孩子们那么兴奋并不奇怪--这是他们第一次出国。 No the children are excited- this is the first time they've been abroad.
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