日本的PC主要应用在装配式框架结构,采用()方式压接,属装配速度快的“干节点”。
A.焊接
B.机械锚固
C.预应力
D.灌浆
参考答案:C
— Li Zhai has been watching the Korean TV series Temptation of Wife the whole night.
— ________. [ ]
A. So her parents have
B. So have been her parents
C. Her parents have been so
D. So have her parents
一个圆形若半径增大到原来的1.5倍,则面积是原来的()倍。
A.1.5
B.2
C.2.25
D.1.5π