水中的（）会降低奥氏体不锈钢受热面的抗腐蚀能力。
A、氯离子
B、钠离子
C、镁离子
D、铁离子
参考答案：A
什么叫做热电动势、接触电动势和温差电动势？说明热电偶测温原理。
Which of the following should be the nurse's initial action immediately following the birth of the neonate
A．Aspirating mucus from the neonate's nose and mouth.
B．Drying the infant to stabilize the neonate's temperature.
C．Promoting parental bonding.
D．Identifying the neonate.
