下列选项不能用半依比例尺绘制的符号表示的是( )。
A．管线
B．围墙
C．通信线路
D．三角点
参考答案：D
—Was the proposal passed at yesterday’s meeting?
—Yes, but some members of the committee expressed _______.
A．associations
B．authority
C．corporations
D．reservations
含石棉的管子及管子附件
