按照系统安全工程的观点，安全是指系统中人员免遭（）的伤害。
A.事故
B.不可承受危险
C.有害因素
D.意外
参考答案：B
The nurse is caring for a client who is in labor. The physician still isn't present. After the neonate's head is delivered, which nursing intervention would be most appropriate ？（）
A．Checking for the umbilical cord around the neonate's neck.
B．Placing antibiotic ointment in the neonate's eyes.
C．Turning the neonate's head to the side, to drain secretions.
D．Assessing the neonate for respirations.
18F-FDG肿瘤显像原理，是基于（）
A.多数肿瘤细胞无氧葡萄糖酵解异常旺盛
B.肿瘤细胞膜上葡萄糖转运蛋白对18F-FDG的转运速率相对增快
C.F-FDG在肿瘤细胞内经己糖激酶作用转变为6-磷酸18F-FDG而滞留在细胞内
D.肿瘤局部18F-FDG摄取量与肿块内成活的肿瘤细胞数成正比
E.多数肿瘤细胞内葡萄糖-6-磷酸激酶活性增高，致肿瘤内浓集的放射性很快消退
