男性，67岁，多关节肿痛1个月余，诊断为类风湿关节炎，磺胺类药物过敏，以下药物不可以

关于x的二次三项式2x²+7x+m能被x+3整除，则m的值为______．

A 2-year-old child is brought to the emergency room with a broken arm. Which of the following findings would lead the nurse to suspect child abuse

A. The child has bruises on the forearms.
B. The child’s clothes are dirty, torn, and obviously "hand-me-downs. "
C. The child’s father alters the story of the injury each time he tells it.
D. The child’s mother did not come to the hospital with the chil

2011年春节期间，羊肉价格上涨明显，农贸市场零售价格一度达到每斤38元，但各大超市价格基本保持在每斤30元，农贸市场价格上涨幅度大的原因：春节羊肉消费量增加，本地羊的货源有限，供应吃紧，造成价格大幅攀升。这说明

A．价格由气候决定

B．价格是个平均数

C．市场是价格的基础

D．价格由价值决定并受供求关系的影响

强制性认证产品进口的要件包括( )

A．质量许可

B．认证合格

C．取得证书

D．加施标志

板式轨道的钢轨高低、水平调整采用特制的调整块进行。垫块分（）和（），调整时放在钢轨与板体顶面之间。