单项选择题

用氟离子选择电极测定溶液中氟离子含量时,主要干扰离子是()。
A、其他卤素离子
B、NO3-离子
C、Na+离子
D、OH—离子

点击查看答案

你可能感兴趣的试题


单项选择题

​我国漠河地区有时可见绚丽的极光,这一般说明什么?​

A.太阳活动较剧烈
B.太阳活动较平静
C.地球磁极已翻转
D.漠河气温较异常

单项选择题

For basic course requirementIn this section you are asked to read a passage and then do the exercises given below.Health communication is the study and use of communication strategies to inform and influence choices people make about their health. Health information technology includes digital tools and services used to enhance patients’ self-care, assist in patient-provider communication, inform health behaviors and decisions, prevent health complications, and promote health equity. Messages are shared through channels such as mass media, print materials, social media, mobile phone applications (apps), e-mail, text messaging, telehealth services, and face-to-face conversations. Health communication and health information technology enables health professionals and the public to search for, understand, and use health information to significantly impact their health decisions and actions. ¹This fact sheet provides proven intervention strategies—including programs and services—to develop successful health communication and health information technology interventions. It can help decision makers in both public and private sectors make choices about what intervention strategies are best for their communities. This fact sheet summarizes information in The Community Guide, an essential evidence-based resource of what works in public health.l Use the information in this fact sheet to help select intervention strategies you can use in your community.l Combine health communication strategies with other interventions to increase awareness and encourage appropriate health behaviors, such as getting cancer screening, receiving recommended vaccinations, and reducing tobacco use.l Develop interactive digital interventions to improve blood pressure control using digital devices that provide personalized, automated guidance on blood pressure self-management.l Combine activity monitors with interventions that include behavioral instruction through group-based or web-based education to increase physical activity.l Implement text messaging interventions to increase medication adherence among patients with chronic medical conditions.l Develop telehealth interventions that use electronic or digital media to improve care among adults who have diet-affected chronic diseases.l Implement diabetes self-management mobile phone apps within healthcare systems to improve blood glucose.1.Health information technology includes digital tools and services used to (   )patients’ self-care, assist in patient-provider communication, inform health behaviors and decisions, prevent health complications, and promote health equity.

多项选择题

以下基团是苯环上亲电取代反应的活化取代基的是:( )

A.甲基
B.羟基
C.硝基
D.醛

单项选择题


A、
B、
C、
D、