比较﹣2.4，﹣0.5，﹣（﹣2），﹣3的大小，下列正确的是 [ ] A．﹣3>

The nurse teaches a client about the relationship between body position and gastroesophageal reflux. Which of the following statements by the client would indicate that he understands measures to avoid problems with reflux while sleeping

A. "I can elevate the head of the bed 4 to 6 inches. "
B. "I can elevate the foot of the bed 4 to 6 inches. "
C. "I can sleep on my back without a pillow under my head. "
D. "I can sleep on my stomach with my head turned to the left. "

纤维素被称为第七营养素。食物中的纤维素虽然不能为人体提供能量，但能促进肠道蠕动、吸附排出有害物质。从纤维素的化学成分看，它是一种[ ]

A．二糖

B．多糖

C．氨基酸

D．脂肪

假设你是办税服务厅的负责人，请结合自己的工作经验，谈谈对办税服务厅发生业务系统故障，导致办税服务厅不能正常受理业务时的应对办法。

护理师会催奶吗？要是客户没奶或奶不多怎么办？

（）的主要作用是避免带钢出现过酸洗缺陷，并且提高带钢表面质。