管坯加热温度不均匀，会产生钢管全长壁厚不均的缺陷。
参考答案：对
3. ----I want to have a room _____ south.
----Sorry, all the rooms have been booked.
A．faces
B．facing
C．faced
D．to face
下列证候，可见矢气酸臭的是
A．肝胃不和
B．肝脾不调
C．脾胃虚弱
D．宿食停滞
E．寒客于胃
