杆塔横担按材质的不同分为木横担、铁横担、瓷横担。
参考答案：对
My command of English is not ____ yours.
A．as half as
B．so half good as
C．good as half as
D．half so good as
下列哪项是虚证致痛的特点（）
A.胀痛
B.刺痛
C.重痛
D.空痛
E.走窜痛
