穿孔变形的四个区是什么？
参考答案：
穿孔准备区、穿孔区、辗轧区、归圆区.
Which of the following denotes the primary reason that the nurse inserts an indwelling urinary (Foley) catheter in a child with severe burns
A．Monitoring for a urinary tract infection.
B．Measuring urine output accurately.
C．Preventing urinary retention.
D．Assessing urine specific gravity.
揭开我国社会主义改革开放序幕的会议是（ ）
A．中共十一届三中全会
B．中共十一届六中全会
C．中共十二届三中全会
D．中共十二届六中全会
