回弹法测强度时,相邻两测区的间距不能小于2m,测区面积宜为400cm2。( )
参考答案:对
Don't ______ the window. Listen to me carefully.
A.look out
B.look out of
C.look out at
D.look for
当建筑长度超过限度时,考虑设置()。
A.施工缝
B.沉降缝
C.温度缝
D.防震缝