石决明的药用部位是
A．卵鞘B．贝壳C．雌虫干燥体D．干燥内壳E．背甲
参考答案：B
The nurse is caring for a neonate with a myelomeningocele.The priority nursing care of a neonate with a myelomeningocele is primarily directed toward （）.
A．ensuring adequate nutrition.
B．preventing infection.
C．promoting neural tube sac drainage.
D．conserving body heat.
锅炉结焦的原因及危害有哪些？
