关于降压装置的选择和应用,下面哪些描述是正确的() A.降压装置应有防止硅元件开路的措施B.额定电流应满足回路最大持续负荷电流的要求C.应有承受冲击电流短时过载的能力D.应有承受反向电压的能力
关于降压装置的选择和应用,下面哪些描述是正确的()
A.降压装置应有防止硅元件开路的措施
B.额定电流应满足回路最大持续负荷电流的要求
C.应有承受冲击电流短时过载的能力
D.应有承受反向电压的能力
相关考题:
下列关于氢氯噻嗪降压作用的描述,不正确的是A.作用温和、缓慢、持久B.单独应用,治疗重度高血压C.长期大剂量使用可致低血钾D.长期应用能增高血浆肾素活性E.早期用药通过排钠利尿,降低有效血容量,减少心排量而降压
在借助表格和图表来描述数据时,下面哪些建议是正确的?A.Limit the number of tables and figuresB.Write a descriptive title for each table and figure.C.Number each table and figure in the order in which they are referred to in the textD.Be sure all tables and figures are referred to in the text.
在借助表格和图表来描述数据时,下面哪些建议是正确的?A.Be sure all tables and figures are referred to in the text.B.Write a descriptive title for each table and figure.C.Number each table and figure in the order in which they are referred to in the textD.Limit the number of tables and figures