加强煤粉炉中气流扰动的作用是（）。
A.加速挥发分的燃烧
B.驱除焦炭粒表面的燃烧产物
C.增强火焰对受热面的传热
参考答案：B
组成大脑皮层的主要结构是
A．神经元突起
B．神经元细胞体
C．传入神经纤维
D．传出神经纤维
The correct procedure for auscultating the client’s abdomen for bowel sounds would include()
A. palpating the abdomen first to determine correct stethoscope placement.
B. encouraging the client to cough to stimulate movement of fluid and air through the abdomen.
C. placing the client on the left side to aid auscultation.
D. listening for 5 minutes in all four quadrants to confirm absence of bowel sounds.
