小型涵管在顶进过程中,千斤顶对管节的施力点一般在管底往上D/4或2D/5(D为外径)处。
参考答案:对
– I argued with my best friend. ?
– Maybe you should say you’re sorry.
A. How was your feeling B. What would you do C. What should I do
门诊处方药量一般以()日为宜
A.1
B.3
C.5
D.7