轴流式通风机一般是由叶轮、整流器、进风口、扩散器、传动装置等组成。
参考答案：对
利用基数，连续计算就是以( )或面为基础，利用连乘或加减，算出与它有关的分部分项工程量。
A．集
B．层
C．点
D．线
Which of the following is not a contributory factor to thermoregulation in the preterm neonate()
A. Immature central nervous system (CNS).
B. Large skin surface area.
C. Lack of subcutaneous (S. Ｃ. ) and brown fat.
D. Tendency toward capillary fragility.
