AxiosX荧光光谱仪外循环水系统的作用有那些？
参考答案：
（1）冷却内循环水
（2）使机箱恒温
（3）冷却X光管阴极灯丝
The nurse is teaching family members of a client with hepatitis A virus (HAV). Family members were exposed to the client and, therefore, should receive immunoglobulin. The nurse should tell the family members that immunoglobulin
A. prevents hepatitis infection in all people.B. provides immunity for life.C. must be administered within 2 weeks of exposure.D. should be administered even if the person has anti-HAV antibodies.
企业有关账户月末余额为：“原材料”借方260000元，“库存商品”借方240000元，“生产成本”借方100000元，“材料成本差异”借方20000元，则月度资产负债表的“存货”项目期末数应填列______。
A．580000 B．620000C．610000 D．600000
