发自髓室底至根分叉处的管道是（）
A.管间吻合
B.根管侧支
C.根尖分歧
D.侧支根管
E.副根管
参考答案：E
I know that smoking is a bad habit, but I can’t ______ the feeling that I need to smoke.
A．have fun with
B．get rid of
C．look forward to
D．get away with
预应力钢筋超张拉的目的是为了减少（）引起的预应力损失.
A.混凝土收缩
B.混凝土徐变
C.钢筋松弛
D.孔道摩擦
