There are two spare rooms in the building, __________ has been provided with air-conditioners. A. neither of it B. neither of them C. neither of which D. neither of this
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根据所听到的内容答题__________ A. $21. B. $9. C. $12. D. $3.
根据所听到的内容回答__________ A. Receptionist and client. B. Teacher and student. C. Employer and employee. D. Doctor and patient.
高层钢结构建筑的钢梁与钢柱连接方法,目前我国一般采用的是()。
梁下部纵向钢筋净间距应满足下列哪条要求?(d为纵向受力钢筋直径)()