正常新生儿出生后体重下降，能恢复到出生时体重的时间是在出生后
A．15～2l天B．7～10天C．11～14天D．2～4天E．4～6天
参考答案：B
The nurse is interviewing a client about his medical history. Which preexisting condition may lead the nurse to suspect that a client has colorectal cancer（）
A. Duodenal ulcers.
B. Hemorrhoids.
C. Weight gain.
D. Polyps.
变压器差动与瓦斯保护有何区别？
