某网络计划图如下图所示:
工作D的紧后工作是()。
A. 工作A
B. 工作H
C. 工作J
D. 工作E
A.He is coming.B.He is cooking.C.He is writing a letter.D.He is writing a paper.
A. He is coming.
B. He is cooking.
C. He is writing a letter.
D. He is writing a paper.
儿童患腹股沟疝,首选的术式是
A. 单纯疝囊高位结扎术
B. 佛格逊(Fe唱uson)法
C. 麦克凡(McVay)法
D. 巴西尼(BassiDi)法
E. 疝成形术
【B8】
A. started
B. founded
C. set up
D. organized