在混合痔手术过程中，若外痔静脉丛不很明显，应在外痔中间（）
A.作’V’字形切口
B.作倒’V’字形切口
C.作放射状切口
D.不必切口
参考答案：C
—Look, the bus is coming.
—But it's full of people. We can't it. [ ]
A. get off
B. get down
C. get on with
D. get on
汽轮机升速过程应注意哪些问题？
