热水采暖的顶层平面图要标明膨胀水箱集气罐等设备的位置、规格及管道连接情况。( )
参考答案：对
However frequently , the works of Shakespeare always attract many people.
A．performed
B．performing
C．being performed
D．to be performed
JTG E50-2006规定宽条拉伸试验的拉伸速率均为实际夹持长度的20%±1%/min。（）
