图所示为哪一种风叶（）
A.轴流风叶
B.离心风叶
C.贯流风叶
D.回旋风叶
参考答案：B
1KB存储容量可以存储汉字的内码个数是______。
A．1024
B．512
C．256
D．约341
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 (SC) and brown fat.
D. Tendency toward capillary fragility.
