受体病
参考答案：
由于受体基因突变使受体缺失、减少或结构异常而致的疾病称受体病。
在温度压强不变时，1mol NO2高温分解，生成NO和O2，达到平衡时容器内气体的物质的量变为1.2mol，这时NO2的转化率为（ ）
A．10%
B．20%
C．40%
D．50%
A client is 22 weeks pregnant with her first child. Her weight gain is normal, but she complains of constipation. What’s the most effective recommendation the nurse can make（）
A. "Take a mild laxative daily. "
B. "Increase intake of fluids and high-fiber foods. "
C. "Relax when trying to move the bowels. "
D. "Start a strenuous exercise program. "
